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HomeMy WebLinkAboutRESOLUTION NO. R10-04-145STATE OF GEORGIA COUNTY OF FULTON RESOLUTION NO. R10-04-145 A RESOLUTION TO ADOPT THE CITY OF MILTON TRAFFIC CALMING POLICY BE IT RESOLVED by the City Council of the City of Milton, Georgia while in Regular called Council meeting on the 26th day of April, 2010 at 6:00 p.m. as follows: SECTION 1. That the Traffic Calming Policy and Procedures Manual for the City of Milton, attached hereto and incorporated herein by reference as Exhibit "A," is hereby adopted and approved; and, SECTION 2. That all resolutions in conflict herewith are hereby repealed. SECTION 3. That this Resolution shall become effective upon its adoption. RESOLVED this 26th day of April, 2010. Attest: " 11� Sudie AM Gordon, Interim i ler (Seal) Approved: Mayor City of Milton, Georgia Traffic Calming Policy and 'Procedures Manual April 26, 2010 City of Milton Public Works Department 1.3000 Deerfield Parkway, Suite 107G Milton, Georgia 30004 (679) 242-2500 "T'raff`ic Calming Policy and Procedures Manual i t 'n3 Table of Contents i. Introduction........................................................................... 11. Application....... ............ ....... .................................. ..................................... ...........4 tfl. Traffic Calming Process..................................... S IV. Applicant Petitions Appendix A — Passive Traffic Calming Measures ............................................................6 A-1. Radar Trailer...... ................................. ............................ ............... .... . ......... . . ................ 7 A-2. Narrowing Lanes............................ .......... ........ ......... ....... ......... ,..................................7 A-3. One Way Treatment.•....................................................8 A-4. On-street Parking..........................................8 A-5. Gateway and Pavement Treatments.. .. - . ......... ......................................,..............9 A-6. increased Patrolling and Target Enforcement.............................................................10 A-7. Neighborhood Safety and Awareness Programs (Neighborhood Watch) ...••••,••••••.....11 Appendix B -- Active Traffic Calming Measures...............................,............................12 r+ B-1. Standard Speed Hum...............:.........................13 am" B-2. Intersection Hum 14 B-3. Neighborhood Traffic Circles (Roundabouts)•.•.••.••­­ ................................... ... 16 B-4. Splitters (short medians) ................... ................. ........_._. ..........................18 B-5. Chicanes (deflectors)..................................................20 B-6. Chokers (neck-downs)....................................................22 B-7. Curb Extensions..._.......................................................................................................24 8-8. Modified Intersections.......................................25 8-9. Median Barriers............................................................27 Appendix C — Standard Traffic Calming Details......... ..................... .................... .............. ...... 29 C-1. Speed Cushion............................. ........... .......... ..................... ...... C-1 C-2 C-2. Speed Hump C-3. Speed Table/Raised Crosswalk.... ........................................ ................ C-3 C-4. Chicane/Center Islands............................................,................. C-4 Appendix. D —Traffic Calming Forms... ... ........................................ ...................... . .................30 D-1 D-1, Application........................................................ D-2 D-2. Petition...................................................................................... �I Page 2 Traffic Calming Policy and Procedures Manual I. Introduction In order to enhance the quality of neighborhood life and the safety of the city's residents, the Public Works Department is establishing this traffic calming program. The program is committed to balancing the needs of our residential neighborhoods with the operational mobility needs of the city road system. The goals of this program are: Reduction of traffic speed to a safe and appropriate limit. Encourage community participation. Encouragement and enhancement of pedestrian, bicycle, and transit systems. Limiting traffic calming to local residential: streets. « Ensuring emergency vehicle access. Use of effective, efficient, economical, and environmentally sound traffic calming solutions. « Multi -discipline input from engineers, planners, police, and fire. • Continued monitoring of speeds, traffic volumes; and accidents. The Public Works Department shall review applications for traffic calming measures in accordance with this policy and the City of Milton Code of Ordinances, Chapter 48, Article IV (Traffic Calming), as may be periodically amended. It is extremely important that the approach taken by the traffic calming program is a systematic one. While each situation may be somewhat unique, the same definitions and criteria, as outlined in this policy, are applied. Also, the transportation system of the city should be considered as a whole. Solving one local problem should not cause another problem to appear somewhere else. The traffic calming program is to be used only for local residential streets, as defined in the ordinance. Keeping with the general guidelines and recommendations as set forth in the Manual on Uniform Traffic Control Devices and Institute of Transportation Engineers, aids in the recognition and understanding of traffic control devices. Standardization of these devices will help ensure that any given traffic calming measures including the use of speed humps will be equally recognizable and require the same action on the part of the motorist regardless of where they are encountered. IL Application The application form is required to be submitted to the Department of Public Works to begin the traffic calming process. Applicants should provide detailed information on the description of traffic concerns and any additional pictures or sketches to identify problem areas. The completed application must be returned to the Public Works Department at address below, where it will be processed. The application form is located in Appendix D. City of Milton Department of Public Works Traffic Calming Program 13000 Deerfield Parkway, Suite 107E low" Milton, Georgia 30004 Page 13 Traffic Calming Policy and Procedures Manual y_ 2 u r tt tll.Traffic Calming Process This section describes the process which will be followed to evaluate a request for traffic calming measures. I . A Homeowners' Association (HOA), or if no HOA exists, a neighborhood group, or individual (referred to herein as "Applicant) will submit an application form to the Department of Public Works to determine if traffic calming measures along a stretch of roadway may be warranted. An application form is included in Appendix D. The applicant must be an individual with the authority to act on behalf of the subdivision or neighborhood. 2. Public Works will make a field review of the area to determine what studies should be conducted to determine if the roadway is eligible based on the requirements established by the Traffic Calming Ordinance.. 3. The project will be reviewed in accordance with the warrant criteria established in the ordinance. The Applicant will be informed in writing of the results of the study. a. If the results of the study indicate traffic calming measures are not warranted, the applicant will be notified why it is not eligible and the process ends. The Applicant must wait a minimum of six months to request another traffic calming study. b. If the results of the study indicate that traffic calming measures are warranted, an application fee in the amount of $500 and the Applicant petition are due to Public Works at this time. The application is a non-refundable fee. 4. Applications will generally be processed on a first come - first serve basis based on the time at which the completed applicant petition and application fee are received. The Public Works Department reserves the right to adjust project priorities based on available funding. 5. If the results of the study indicate that traffic calming measures are warranted then Public Works will schedule a meeting with the Applicant to discuss the study findings, suggested concept solutions, and the overall traffic calming process. 6. Public Works will develop a design and construction cost estimate based on the City's approved traffic calming construction details (See Appendix C) and conceptual solutions discussed with the Applicant. 7. If the Applicant proposes to deviate from the approved construction details or proposes alternate details, the Applicant shall be responsible for all construction and design costs associated with the implementation of those details. The final design must be approved by Public Works prior to construction. OWN 6. Where the applicant proposes to use alternate materials on the City's approved construction details, the applicant shall be responsible for all design and construction Page 14. 'Traffic Calming Policy and Procedures Manual costs above the base cost established for the appropriate construction detail. All w materials must be approved by Public Works prior to inclusion. 9. Pollce and Fire have veto power on any solution that may create an issue for emergency vehicles. 10. Public Works will confirm that there are adequate funds in the Department's budget and may prioritize petitions based on available funding. Once notified that the application has been approved to proceed to construction, the applicant shall have 45 days to submit their share of the estimated construction costs. Application shall be void if the required funds are not submitted within 45 days unless otherwise approved by Public Works. 11. When City funds are utilized, standard city procurement procedures will be followed to implement the traffic calming measures. 12. Within 6 months of project installation, Public Works staff may conduct follow-up studies to measure project effectiveness. W.Applicant Petitions The city requires that there be wide support from the community for implementing traffic calming measures in its neighborhood. Prior to the development of conceptual plans at least 67 percent (2/3 majority) of the homeowners in the study area must sign a petition in favor of the installation of traffic calming measures. Prior to the submission of the petition the applicant should confirm the extents of the designated study area with the Public Works Department. Where a neighborhood or other defined study area has a mandatory homeowners' association or other legal mechanism which may legally represent their position on such matters, this entity may replace the petition process as approved by the Public Works Director after consultation with the city attorney. The study area is defined as a subdivision or neighborhood and includes affected street property owners and property owners fronting adjacent side streets within the subdivision or neighborhood where Public Works considers it likely that motorist must travel through the proposed traffic calming measures in order to access their lots. When a mandatory homeowners' association or other legal mechanism niay represent the applicant, a letter is required stating that the HOA has the authority to make financial decisions on behalf of the neighborhood or subdivision. The letter should formally record the applicant's support for the installation of traffic calming measures in the neighborhood, to be constructed within the public right-of-way and conform to the design and safety standards for such devices as determined by the City of Milton Department of Public Works. The letter should also affirm that the applicant will be financially responsible for at least 50 percent of the basic installation costs for the traffic calming measures. The letter will be reviewed by the City Attorney. wpm The completed petition or letter must be returned to the Public Works Department where it will be validated. The petition form is located in Appendix D. Page 15 Traffic Calming Poticy and Procedures Manual 1 •" Appendix A Passive 'Traffic Calming Measures The primary use of passive measures is to reduce the speed of traffic while raising awareness of the traffic problems in residential areas. These methods are less costly than active devices, as they do not affect the geometry of the roadway or require extensive construction. Passive traffic calming measures include radar trailers, re -striping, and installing signs. General advantages of passive geometry traffic calming measures: • Pose no restrictions for bicycles or pedestrian traffic. • [does not affect intersection capacity or operation. • Cheaper than active traffic calming devices. • Raise awareness of drivers to speeding problems. • No impacts to transit or emergency services. • Can be done regardless of the grade of the road. General disadvantages of passive traffic calming measures: Not necessarily enforceable. « Not always effective over time. Page 16 Traffic Calming Policy and Procedures Manual.. 4h A4. Radar Trailer Description: The City of Milton is considering the operation of a number of portable radar speed meters capable of measuring vehicle speed and graphically displaying the speed of the motorist. Primary Purpose. Reduce vehicle speeds by raising the awareness of the driver to their speed AdvantNges: • Possible speed reduction for short intervals at the radar trailer location. • Opportunity to collect volume and speed data, dependent upon equipment. Disadvantages: • Not an enforcement tool, • Minimal effectiveness on reducing traffic speeds over time. A-2. Narrowing Lanes Description: Striping is used to narrow travel lanes to 10 -foot widths. Primary Purpose: Reduce vehicle speed by creating the perception of a narrower road. Generally, speeds are lower in 10 -foot wide lanes than in 12 -foot wide lanes. Advantages: Re -striping can include bike lanes or bike -friendly shoulders. This reduces the vehicular lane width while also providing a safe place for bikes to travel. Striping to include bike lanes also reduces the potential for driver to drive outside the lane. Striping is easily modified when done with a concurrent asphalt resurfacing program. Disadvantages: • Citizens do not always perceive striping to be an effective traffic calming technique. Page 7 Traffic calming Policy and Procedures Manual °'i F... k.. A... .. , _,WPM A-3. One Way Treatment Description: One-way treatment involves having streets or roadways upon which vehicular traffic is allowed to travel in one direction only. PrimaU, Purpose: Increase the safety of a roadway by reducing the number of conflicting movements. One-way treatment is not a traffic calming method, but can be used to manage traffic flow in an area. Advantages. • Increases the safety of the roadway by reducing the number of conflicting movements. • One way treatment of a roadway is enforceable. Disadvantages: • Changing a street from a two-way operation to a one-way operation takes a lengthy implementation process. • Changing a street from a two-way operation to a one-way operation may impact emergency services or transit systems. • Changing a street from a two-way operation to a one-way operation requires the consideration of the impact on the local system. Steps should be taken to ensure that making a roadway one way will not move the problem elsewhere or create new problems. Works best in a system comprised of parallel roads. • Residents may be unconvinced by changing traveling behaviors within the subdivision. Other Considerations: Emergency services and transit routes should be considered when changing from two- way operation to one-way operation. Their opinions will be solicited and weighed appropriately. A-4. On -street Parking Description: On street parking provides designated parking spots on the sides of roadways. Primary Purpose' Page ( S Traffic Calming Policy and Procedures Manual On -street vehicular spaces provide both additional parking and traffic calming benefits. Drivers tend to travel more slowly when driving past a lane of parked cars due to a reduction in the perceived travel way. Advantages: • May reduce the speeds of the through traffic. • Increase pedestrian safety — on -street parking provides a greater buffer between the sidewalk and the traveling vehicular lanes. Disadvantages: • Common perception that on -street parking is not aesthetically pleasing. • Possible difficulty seeing pedestrians crossing at mid -block locations. Other Considerations: • Parking spaces should be prohibited at least 100' from an intersection and at least 10' on both sides of a fire hydrant. • Create a wide single lane where on -street parking would be promoted. A-5> Gateway and Pavement Treatments GATEWAY TREATMEN Description: Gateway treatments are decorative entrances indicating transition from one area to another. Pavement treatments involve decorative pavement in the form of different colors and textures. Primary Purpose: Visually alert the driver that they are entering a new area, such as a residential area from an arterial road. Gateway treatments can include signs, decorative walls, arches, pillars, hedgerows, etc. Pavement treatments can include colored concrete, stamped concrete, or bricks. Advantages; WRO Versatile and easily individualized for each specific neighborhood. 40" : Aesthetically pleasing. Page 19 'traffic Calming Policy and Procedures Manual • Easy to implement with active traffic calming devices. Disadvantages: • Limited utility in speed reduction. • Maintenance and replacement costs can be costly and difficult to address. Other Considerations: • Gateway treatments should not obscure proper sight distance, therefore making the intersection less safe. Structures are not permitted in the public right-of-way. A-6, Increased Patrolling and Target Enforcement Description: Police can intensify coverage for an area of concern, most commonly to enforce speed limits and stop signs. Primary Purpose. Increase the awareness to the traveling public of law enforcement and to encourage them to obey traffic laws. Advantages: • Citizens perceive as achieving results with an increased police presence. • Decrease in traffic violations in the general area. Disadvantages: • Police generally do not have the staff to regularly patrol most residential areas. • Time that police officers spend patrolling for traffic violators is not directly spent in reducing violent crime. • Many residential roads have insufficient geometric alignment for radar enforcement. • Increasing patrols and enforcement only reduces speeds in the general area during the period of intensified attention. Once the intensity subsides, the traffic violators typically return to their previous habits. • Enforcement applies to all residents in violation. Other Considerations: • If heavy truck traffic is an issue, citizens can request that the road be added to the truck route prohibition list. Page 1 10 `rraFfic Calming, Policy and Procedures Manual A-7. Neighborhood Safety and Awareness Program (Neighborhood Watch) Description: Teach techniques motorists, pedestrians, and parents can use to help address speeding issues, and increase awareness of their driving habits. Unique programs can be developed for specific cases, such as crime awareness or parking enforcement. Primary Purpose: Increase the awareness and activity of the neighborhood. Frequently, it is members of the neighborhood who are the most flagrantly violating traffic ordinances (i.e. stops signs or the speed limit). Advantages: • Involves the neighborhood actively and regularly in the solution. • Easily combines with other traffic calming techniques, Disadvantages: • Citizens do not always perceive neighborhood watch programs as effective traffic calming techniques. • Program effectiveness is proportional to the level of neighborhood association involvement. Traffic Calming Policy and Procedures Manual Appendix 8 Active Traffic Calming Measures The primary purposes of active traffic calming devices are to reduce the speed of traffic, improve bike and pedestrian safety, and raise awareness of traffic problems in a residential area. These methods are more expensive than passive devices because they often affect the geometry of the roadway, which requires extensive construction and maintenance. Active traffic calming devices include speed humps, traffic circles, and splitters. General advantages of active traffic calming devices: • Effective at solving specific traffic issues, especially speeding • Raises awareness of drivers to speeding problems General disadvantages of active traffic calming devices: • May pose restrictions for bicycle traffic • May negatively impact transit or emergency services •� • Higher cost than passive traffic calming measures i r.. Pae g 12 � Traffic Calming Policy and Procedures Manual B-1. Standard Speed Humps Description: The standard speed hump is a 22 -foot long, four to six inch high, and constructed of asphalt or concrete, extending the entire width of the roadway which causes vertical displacement of the vehicle. The hump consists of two 6 foot long ramps flanking a 10 foot flat section. Humps can be colored and/or textured to add aesthetic appeal. Primary Purpose: Reduce vehicle speeds by providing vertical displacement of the vehicle that result in a jolt if the vehicle's speed is too high. Advantages: • Reduces vehicle speeds — encouraging 25 mph vehicle speeds. • Pose no restrictions for bicycles. • Do riot affect intersection capacity or operation. Disadvantages: • Potentially increase traffic noise from braking and acceleration of vehicles, particularly buses and trucks Transit Service lnippcts: • 22 -foot speed humps create a minor impact to transit scheduling. mertlency Services Impacts: When speed hump designs are selected for any street, one should consider whether it is used as a primary response route. Minor impacts to response time may occur. Other Considerations:. Speed humps should not be considered on grades of eight percent or greater. Page: 1 13 Traffic Calming Policy and Procedures Manual I `,U F B-2. Intersection Hump Description: Similar to the speed hump, the intersection hump slopes are all straight lines and are typically �-• constructed out of concrete with a surface treatment or patterning. The top of the intersection hump is flat, and the one pictured above extends beyond the boundary of the intersection providing a spot close to the curb for pedestrians to safely cross. The structure does not extend into the gutter areas for necessary drainage concerns. Primary Purpose: Reduce vehicle speeds at intersections by providing vertical displacement of the vehicle that result in a jolt if the vehicle's speed is too high. They may also provide a place for pedestrians to safely navigate the intersection. At an intersection where an all -way stop is unwarranted, an intersection hump forces motorists to navigate the intersection more slowly, making them more likely to yield the right-of-way to other motorists and pedestrians. Advantages. Reduce vehicle speeds — encourage 25 mph vehicle speeds. • Pose no restrictions for bicycles. • Increase pedestrian safety by providing a distinct location for drivers to yield right-of- way. increase intersection safety by providing a distinct location for strivers to yield right-of- way to other legs of the intersection. ', I]Isadyanta('�eS: own _ . Potentially increase traffic noise from braking and acceleration of vehicles particularly buses and trucks. . Noise from tires hitting the structure. Pae 1 14 Traffic Calming Policy and Procedures Manuel } • Perception from real estate industry that speed tables affect property values negatively. Advertises "a speeding problem." Transit Service Impacts: • Intersection humps do not significantly impede transit services_ Emergency Services Impacts: • When intersection hump designs are selected for any street, one should consider whether it is used as a primary response route. Intersection humps may cause difficulty with the turning radii of large vehicles. Other Considerations, Intersection humps should not be considered on grades of eight percent or greater. Intersection hump may also pose- challenges with surface water management Page 115 1 Traffic Calming Policy and Procedures Manual B-3. Neighborhood Traffic Circles (Roundabouts) TRAFFIC CIRCLE Description! Traffic circles or roundabouts consist of a landscaped island in the center of the intersection with appropriate signage and marking. A driver enters a traffic circle by turning right, after yielding to any traffic coming from the left. All turns from a roadway intersection that has a traffic circle are right in, right -out. Primary Purpose: Reduce speeds through intersections and assist drivers in proper yielding. Advantages: Increase operational safety by reducing the number of conflicting movements. • Reduce speeds in the intersection. Cannot be ignored like an intersection controlled by stop signs. May improve intersection capacity and operation. Accommodates intersections with a wide range of access points (i.e. three to five way intersections) and can include driveways in the intersection. Disadvantages: Provides a potential obstruction for collision. Maintenance costs increase over all -way stop due to increased landscaping and/or • pavement. Transit Service Impacts: Traffic circles can be designed such that buses can navigate left turns by going the wrong way through a traffic circle. On roads with high average daily traffic that would make such maneuvers infeasible, traffic circles should be designed large enough for buses to navigate. Page 1 16 Traffic Calming Policy and Procedures Manual Emergency Services Impacts: • Traffic circles can be designed such that emergency service vehicles can navigate left turns by going the wrong way through a traffic circle. On roads with high average daily traffic that would make such maneuvers infeasible, traffic circles should be designed large enough for emergency service vehicles to navigate. Other Cons iderations. • Driveways can directly access the traffic circle. corners. While this • installation of a traffic circle typically requires modifying the existing work can typically be done within the right of way, it impacts perceived property. • visibility of the device should be optimized through the use of raised pavement markers, striping, and signs. Page 1 17 Traffic Calming Policy aiid Procedures Manual B-4. Splitters (short median) SPLITTER Description: Splitter islands divert traffic laterally, often narrowing the roadway, while providing one-way flow for short intervals. Splitters are frequently landscaped for aesthetic appeal. Splitters must maintain a 20ft wide lane for emergency services Primary,_Purpose;. Reduce though traffic speeds. Advantages: • Reduce speeds on roadways through lateral deflection and roadway narrowing. • Provide areas for landscaping and improving the aesthetic value of the neighborhood. Provide locations for safer mid -block pedestrian crossings. • Allowable on grades of eight percent or higher. Disadvantages: Create obstructions for potential collision Expensive design that may require right-of-way to be acquired for concept Maintenance costs increase due to increased landscaping and/or pavement Transit Service Impacts: There is no significant impact to transit services. Emergency Services Impacts: • There is no significant impact to emergency services. Other Considerations: Page 11s Traffic Calming Policy and Procedures Manual • Driveways with access directly to the splitter are not allowable_ If there is hardship in the placement of splitters due to driveway locations, chicanes could be considered. • installation of a splitter island requires modifying the adjacent property. While this work can usually be done within the right of way, it impacts perceived property. • Visibility of the device should be optimized through the use of raised pavement markers, striping, and signs. Page (19 Traffic Calming Policy and Procedures Manual t o B-5. Chicanes (deflectors) CHICANES Description: Chicanes change the physical characteristics of a roadway section from an existing straight alignment to a series of horizontal curves, causing horizontal displacement of the vehicle. Primary Purpose: Reduce vehicle speeds by providing horizontal deflection and a narrowed vehicle travel path, as well as potentially reducing sight distance that is too great. for desired speed. Advantages: Reduce vehicle speeds with less impact on emergency service vehicles. Pose no restrictions for bicycle. Allowable on grades of eight percent or higher. Disadvantaues: Existing driveways can limit placement Create obstructions for potential collision Maintenance costs increase due to increased landscaping and pavement May pose challenges with surface water management Transit Service Impacts: There is no significant impact to transit services, Emergency Services Impacts: wpm There is no significant impact to emergency services. Other Considerations: Page 120 'Traffic Calming Policy and Procedures Manual » Visibility of the device should be optimized through the use of raised pavement markers, striping; and signs. Page 121 Traffic Calrnin.1 Policy and Procedures Manual' B-6. Chokers (neck -downs) CHOKER Description: Chokers narrow a street at an intersection or mid -block by construction of a wider sidewalk, landscape strip, or gateway treatment. Alternatively, lanes can be reduced to 10' by moving the curb lines. Primary Purpose: Reduce vehicle speeds by providing horizontal deflection and a narrowed vehicle travel path, as well as potentially reducing sight distance that is too great for desired speed. Advantages: Reduce vehicle speeds with less impact on emergency service vehicles. Provide shorter pedestrian crossing distances and better motorist -pedestrian visibility. Discourage truck traffic. Allowable on grades of eight percent or higher. Disadvantage Existing driveways can limit placement • Create obstruction for potential collision Potentially impede bicycle safety and mobility • Maintenance costs increase due to increased landscaping and pavement • May pose challenges with surface water management May result in the loss of curbside parking Transit Service Impacts: there is no significant impact to transit services, Page (22 Traffic Calming Policy and Procedures Manual f Emergency Services Imcacts' There is no significant impact to emergency services. Other Considerations: Visibility of the device should be optimized through the use of raised pavement markers, striping, and signs. Page 1 23 Traffic Calming Policy and Procedures Manual ?0' 1 r B-7. Curb Extensions rI1RR PXTFNSION S Description: Curb extensions narrow the roadway to make pedestrian crossing faster and safer. They can be installed either at intersections or mid -block. Primary Purpose: Improve pedestrian safety by reducing the street crossing distance and increasing sight distance. Curb extensions are similar to chokers (neck -downs) and chicanes, but their primary purposes differ. Advantages: Reduce pedestrian crossing distance and time. Make pedestrian crossing points more visible to drivers. Prevent vehicles from passing other vehicles that are turning at an intersection. Provide transition from a through lane to on street parking, dependent upon road width. Visually enhance the street through landscaping or textured treatment. Disadvantages: May reduce the amount of on -street parking. Makes accommodating full bicycle lanes difficult. Transit Service Impacts: • Enhance service by moving the curb so riders step directly between the sidewalk and bus door. Emergency _Services _Impacts.: There is no significant impact to emergency services. Page 124 Traffic Calming Policy and Procedures Manual i Ih = B-8. Modified Intersections MODIFIED INTERSECTION Description. Barriers that restrict movement may be located at problem intersections. Pictured above is a right -in, right -out intersection that restricts all left turn movements to and from the minor road. Other possibilities include increasing or decreasing the curb radii to encourage different turning speeds at the intersection. Primary Purpose: Control traffic flow though neighborhoods. Advantages; improve safety by reducing the number of conflicting movements in that intersection. Reduce local street volumes, • Reduce the need for future traffic control. Restrict vehicular access while retaining bicycle and pedestrian access. Provide safer areas for pedestrians to cross the intersection. Reduce the speeds at intersections. Disadvantages: May relocate traffic to other locations where turning opportunities exist. May inconvenience local residents who are forced to drive longer, more circuitous routes to reach their destination. Maintenance costs increase due to increased landscaping and/or pavement. Transit Service lrnpacts: To minimize the negative effect, transit routes should be planned to accommodate .•. modified intersections. They should not be placed at any location where transit service performs a relevant turning movement.. Page 125 Traffic Calming Policy and Procedures Manual Emergency Services.. Impacts,! Even though these barriers would restrict turns for emergency vehicles, they can be designed and installed to provide for emergency access. If desired, the modification can be constructed with breakaway posts and striping, which would allow emergency services while strongly discouraging the target movements. Other Considerations: 0 Striping is easliy violated. Page 126 Traffic Calming Policy and Procedures Manual Description: Provide a physical barrier on the major street at an intersection that can effectively eliminate left turns from the major street onto the minor street as well as eliminate minor street straight - through traffic and left turn traffic across the major street. Median barriers usually consist of a concrete curbed island with a decorative landscaping and/or surface treatment. primaU Purpose: Restrict traffic flow Advantages: Improve safety by reducing the number of conflicting movements in that intersection. Reduce local street volumes. + Negate the need for future traffic signals. + Restrict vehicular access while retaining bicycle and pedestrian access. + Provide safer areas for pedestrians to cross the intersection. Disadvantages: + May relocate traffic to other locations where left -turn opportunities exist, • May inconvenience local residents who may be forced to drive longer, more circuitous routes to reach their destination. + Maintenance costs increase due to increased landscaping and/or pavement. Transit Service lrnpacts: To minimize the negative effect, transit routes should be planned to accommodate WON performs barriers. They should not be placed at any location where transit service performs a relevant turning movement. page 127 Traffic Calming Policy and Procedures Manual Emergency Services Impacts: Even though median barriers would restrict turns for emergency vehicles, they can be designed and installed to provide for emergency access. If desired, the median can be constructed with breakaway posts and striping or ro • 1 backlmountable curbing, which would allow emergency services while strongly discouraging left turns. Other Considerations: A full median with no breaks can also be used to prohibit all leftturns. Page 1 28 Traffic Calming Policy and Procedures Manual Appendix C Standard Traffic Calming Details Speed Cushion Speed hump Speed Table/Raised Crosswalk Chicane/Center Island Page 12-9 0 7 ti Ols .t sc 01 cs � i� b CL 3hh173 tdtil �� 7 CD i3aais ' w C Gn y: � z£ s< 01 z zn Z (4 I ti T37iiis j J!\YI fi\Vdi. �� �Ivi131�Lte3l � t r` e COQ{ r E r` e Elm 3*i11�31,N7;J Min. t�ais r` e Elm Min. 241 - c �C x.,xkms. � G, ill y `'i c ^ze aN� c s &�` HIM©.r, w ys ..aaG M ea X{' ecj cud c $ ". �' Fa �, x .� n !so O cy �..,"a .Il �C SMITHa �3s 2���� kil���� UN RIMr =2L "ISS�.��o� ;v a�" �v� ` G . 1 g %a mcc vs , now No Text SIORVALK iACK OF CL3F.R � ti: fl w'10 3XII G 4 L •`� u V lZJ W 4 i5 " N C" C a or F'VMT VE iACK OF CL3F.R � ti: fl 4 i5 N C" C VE Is C I_R ii 1.L "i A � '^ rat L• a C,S.' 4O f s _ j Fu aa+.p HAY„ CggCJ c �, cyi'9 rye ��' 3L¢.•� �� alt `�NC� � xfi af' J +� Lal 2 J +u Zq �� in K s v f' fl ry ,r Illi f/ Zq �� j '!vt4 V :59j fl ry ,r Illi LI pp � x 3 72 14 o s s �+. H ro ac'ia � u w c Shu � -ate u�u•� ��. Traffic Calming Policy and Procedures Manual Appendix D City of Milton Traffic Calming Forms Application Farm Petition Form Page 130 NNW .. City of Milton Traffic Calming Application Form k as Subdivision Name: Contact Information: Name: Phone Number: Position: The Application must be filed by a person having the authority to act on behalf of the subdivision or study area. In the case of a mandatory Home Owners Association (HOA) the application must be filed by a member of the board authorized to act on behalf of the HOA. Where an HOA is not considered mandatory the application must be made by a person authorized to act on behalf of the organization. Addi ess. Email: Description of Traffic Concerns and Requests: This completed application form should be sent to: City of Milton Department of Public Works Traffic Calming Program 13000 Deerfield Parkway, Suite 107G Milton, GA 30004 Office Use Only Project Number: Date Application Received:. Date Traffic Study Completed: Traffic Calming Warranted(Y/N): Date Petition Received: Petition Verified (Y/N): Date Concept Meeting: Date City Funding Approved: Date Funding Received: Date Construction Complete: yJ 41 s � bn y I r W.r vim.+ w E U R LL, v to Qn cr N I r y f x J v J V L G O a u r ✓ r f vi ' r 60 •YW� /�� M y C) eA No L'i h h(7 j u ��yi rE �✓tmw ... lytic{' LU i