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HomeMy WebLinkAboutV. COW Agenda Item Traffic Calming 02/24/2009 Mount Prospea .' ~ Mount Prospect Public Works Department INTEROFFICE MEMORANDUM TO: VILLAGE MANAGER MICHAEL E. JANONIS FROM: PROJECT ENGINEER DATE: FEBRUARY 19, 2009 SUBJECT: NEIGHBORHOOD TRAFFIC CALMING PROGRAM, STATUS OF SEE-GWUN A VENUE SPEED HUMP PROJECT & ROLL CURBED STREETS WITH ADJOINING SIDEWALK In May 2005 the Village Board of Trustees and Staff discussed, in concept, a traffic calming program for the community. The meeting focused on the idea of having a traffic calming program that was responsive to neighborhoods. The Village Board was also introduced to a variety of physical devices referred to as traffic calming measures. At the time, it was agreed further discussions would take place after implementation of the Neighborhood Traffic Study. This study was just getting underway and expected to enhance safety by providing standardization to both intersection control and speed limits in neighborhoods. The other component to this study was the anticipated involvement of the Police Department's Traffic Unit. With the many changes to the traffic regulations, they would not only provide enforcement but their hands-on involvement with residents would make for a smooth transition. Ultimately, the Neighborhood Traffic Study would not only lay a good foundation of proper traffic control but the scheduled post-studies would provide insight as to the resulting traffic conditions (i.e. vehicular volume & speed) on the neighborhood streets. As Staff is now completing post-studies in a number of neighborhoods, it is this information that will be valuable in developing a successful Neighborhood Traffic Calming Program. Leveraging our experience implementing the Neighborhood Traffic Study, Staff has begun to reevaluate our intended approach to traffic calming of four years ago. While the program would still provide a process for traffic calming requests initiated by residents, much more up-front work would be done by Staff than originally conceived. This would allow Staff to take a more pro-active approach to the program. This up-front work along with outlining the recommended process and potential traffic calming measures will be discussed in the remainder of this memo. Staffwill also be in attendance at the February 24th Committee-of-the-Whole Meeting to present our proposal in greater detail and answer questions. The second item to be touched on in this memo is the status of the See-Gwun Avenue Speed Hump Project. In the spring of 2006 a series of speed humps were installed along See-Gwun Avenue as a test site per the direction of the Village Board of Trustees. This was done in response to ongoing requests from residents to address vehicular volume and speeding concerns. After a series of post-studies and resident feedback, there was agreement from the Village Board of Trustees in the fall of 2007 that the speed humps would be removed once an alternate traffic calming plan was developed by Staff. However, a combination of Staffs commitment to the ongoing Neighborhood Traffic Study and an uncertainty of the direction of traffic calming in the Village, further discussions did not take place in 2008. Now that Staff has been able to gain greater clarity based on our experience with the Neighborhood Traffic Study, we will provide our recommended next steps for See-Gwun Avenue in the context of the recommended traffic calming program. page 20f7 Neighborhood Traffic Study February 19, 2009 '. And finally, the third item to be discussed is the topic of roll curbed streets with adjoining sidewalk. One of the concerns raised by residents along the 700 block of See-Gwun Avenue was vehicles driving and parking on the sidewalk adjoining the 4" tall roll curb. Staff has considered various options to address this concern and will highlight the benefits and drawbacks. We have also inventoried other similar situations (roll curb with adjoining sidewalk) in the Village and will share this information. Neighborhood Traffic Calming Program Introduction Most traffic calming programs in the country are set up to be reactive, resident-initiated. That is, a resident or group of residents petition the local government for traffic calming measures on a particular street and staff responds to the request. Typically, a process is in place to determine whether the street qualifies for traffic calming measures and if so what steps must take place in order to receive approval. Two advantages to this approach are that one: public interest has been generated early on in the process and two: overstretched staffs' keep the project scope limited to the street in question. However, a major disadvantage to this approach is that solving one problem on a particular street may have repercussions on surrounding streets and throughout the neighborhood. That is why a new trend in traffic calming programs is emerging. The Neighborhood Traffic Study was set up to review intersection traffic control and speed limits on a neighborhood-wide basis. This comprehensive approach was done to assure consistent decisions would be made and the neighborhood as a whole would operate safely. And based on the results of our post- studies, this neighborhood-wide approach is achieving our goal of improving safety. Along this same line of thinking, Staff believes establishing a traffic calming program that also involves a neighborhood-wide approach will best serve the community. Similar to installing a stop sign at one intersection without giving thought to the impact on the adjacent intersection, constructing traffic calming measures on one street without considering the impact on the adjacent street(s) may create new problems. Initial Work Staff recommends that all local and collector streets under the Village's jurisdiction be eligible for traffic calming measures but not all will qualify as part of a traffic calming program. This is an important statement for two reasons. First, it limits traffic calming by street classification. Arterial streets such as Golf Road and Rand Road are designed to move traffic (though not always the case) and are typically not under the Village's jurisdiction. Therefore, physical measures to slow down vehicles or limit volume would not be beneficial or even permitted. Traffic calming on local and collector streets can be appropriate to enhance livability within a neighborhood and encourage traffic back onto the arterial system. However, it should be mentioned that not all traffic calming measures are appropriate for both local and collector streets. For instance, volume reducing measures on collector streets could create problems on lower classification streets. Each neighborhood street and area needs to be reviewed on a case-by-case basis for the appropriate traffic calming measure. The second reason is that it limits traffic calming to the most problematic traffic conditions. Simply allowing all local and collector streets to be eligible for traffic calming without a qualification process could potentially be difficult to control. The purpose, however, to allow all streets to be eligible is to provide Staff an ongoing opportunity to review streets and neighborhoods as traffic conditions may change in the future. The key to limiting projects and having a successful traffic calming program is to be able to establish and adhere to guidelines that will focus our attention only on the most critical areas in the Village. Approving traffic calming measures on any street solely based on request will strain funding and Staff time, and allow for the proliferation of such measures throughout the Village. Rather, Staff believes that having guidelines based on a street's known traffic conditions will limit the amount of traffic calming in town. ~ page 3 of7 Neighborhood Traffic Study February 19,2009 As part of the Neighborhood Traffic Study, Staff has completed all work including multiple post-studies in four neighborhoods. By the end of 2009 we anticipate completing an additional seven neighborhoods and by the end of20l0 all work including post-studies should be complete. With the post-studies, Staff is able to collect average daily traffic, peak hour counts, average speeds, 85th percentile speeds, pedestrian counts and accident data on the neighborhood streets. It is from this data that we can identify streets that experience traffic conditions above the norm. Staff recommends that guidelines be established to determine those streets within our neighborhoods that qualify for traffic calming. The guidelines would be created based on experience from other communities as well as our own collected post-study data. With accepted guidelines, Staff would begin to review the post-study data neighborhood by neighborhood to identify individual streets that would qualify for traffic calming. From there, we would identify any adjacent streets that may be significantly impacted in order to create a project area. A project area is not necessarily the entire neighborhood but rather the limits of potential significant impact. As an example, a cut through issue at one end of a large neighborhood may have no impact on the traffic conditions at the opposite end. Therefore, the project area may be limited to the street in question or may also include a few adjacent streets. It is possible then to have multiple project areas within a single neighborhood. By the end of this phase, Staffwill go through the entire Village neighborhood by neighborhood using the post-study data to identify potential project areas. Because of the time frame to complete the post-studies, Staff would not be able to complete this phase until the end of 2010. However, this initial work could begin this year and continue as post-studies are completed. The Process When the Village receives a traffic complaint and traffic calming maybe a solution, Staff recommends that we first determine whether the street in question falls within a potential project area. If, for some reason, Staff believes updated traffic data is necessary then it would be collected and compared to the established guidelines. Otherwise, we would rely on the latest post-study data. If the street does not qualify for traffic calming, the Engineering Staff would identify any appropriate minor engineering solutions such as signage, striping or landscaping trimming (to address a sight obstruction). We would then notify the resident and refer the issue to the Police Department. Similar to the process today, the Police Department would schedule an enforcement period as time permits. This would not only include actual speed limit or stop sign enforcement but use of the radar trailer and a drone vehicle to improve compliance of the traffic regulations. Education tools such as Keep Kids Alive signs and on-site conversations with residents are other options that would continue to be offered. Should the request fall within a potential project area, Staff would next determine whether there was support from the neighborhood to consider a traffic calming project. This could be done through a petition form provided by the Village or through a ballot mailing. The petition form or ballot would indicate the potential traffic calming measure( s) for the area as determined by Staff. One advantage to this step is that getting public support early in the process should help Staff in working with the neighborhood to address their concerns. Another advantage is that residents know up-front the traffic calming measure(s) they are supporting so that Staff can control the scope of the project. If there is general support based on a pre-determined percentage, Staff would then determine a timetable for review. If there were multiple petitions received by the Village for different project areas, they would be put into a queue either by the order they were received or by a ranking system based on the severity of the issue. The Engineering Staff would next prepare preliminary plans for the project area. Village departments including Police, Fire and Public Works would next review the plans and provide comments. The plans would then be refined based on Staff s comments. page 4 of7 Neighborhood Traffic Study February 19,2009 The recommended plan would then be presented to the Safety Commission at a regular meeting. Residents living in the project area would be notified and invited to participate in the meeting. A web page would also be created on the Village web site to allow residents to view the recommended plan before the meeting. Staff would present the recommended plan and residents could comment. At the end of the meeting, the Safety Commission would either vote on the plan or direct Staff to make revisions and bring it back for further discussion at another meeting. With a vote by the Safety Commission, the plan would then be presented to the Village Board of Trustees. Again, residents within the project area would be notified of the meeting. The Village Board would approve the plan, direct Staff to make revisions and bring it back for further discussion, or deny the plan with no further action. Should the plan be approved, final construction drawings would be developed, funds would be allocated, and the project would go to construction per a pre-determined schedule. After construction, similar to the Neighborhood Traffic Study, a post-study would be performed to determine the effect of the traffic calming measures and to determine if any additional action is necessary. The process as explained above is resident-initiated coupled with a significant amount of up-front work done by Staff. This allows the Village to regulate the number of potential projects while providing an avenue for residents to get involved early in the process. Doing this up-front work will also afford Staff the opportunity to identify a project area that requires immediate attention. Factors including a high accident rate and/or significantly excessive speeds or volumes may cause Staff to initiate a project rather than waiting for resident interest. This may require greater Staff effort in generating support at the beginning of the process but would be necessary if we identify a hazardous condition. The same process would be undertaken but would be initiated by Staff rather than residents. The advantage of doing the up- front work and reviewing the entire Village after the traffic post-studies is evident in the flexibility it allows Staff in pursuing potential traffic calming projects. Traffic Calming Measures Each potential project area will have its own unique environment and set of traffic conditions. As a result, the solution for one area may be different for another area. That is why most communities with a traffic calming program include a wide variety of measures in their "toolbox". The toolbox does not guarantee that all measures will be used but rather it provides options that can be considered for each unique project. The following is a list of traffic calming measures (pictures attached) for consideration. Some of them will need to be further evaluated to determine whether Staff believes they can physically be built on our neighborhood streets and whether they are supported by all Village departments. Horizontal Deflection Measures . Traffic Circle . Chicane Constriction Measures . Choke Point . Median / Entry Island Pedestrian Safety Measures . Curb Extension . Pedestrian Refuge Volume Reducing Measures . Diverter page 5 of7 Neighborhood Traffic Study February 19,2009 · Median Barrier . Street Closure . Turn Restriction Most of the trustees are familiar with these traffic calming measures and, therefore, will not be explained here. However, each one is briefly explained in the Attachment section at the end of this report. Staff will also highlight each of these measures in our presentation at the Committee-of-the- Whole Meeting. One type of traffic calming measure that has not been supported by Staff is vertical deflection measures such as speed humps and raised crosswalks. They have been omitted from the toolbox because of their negative impact on emergency vehicle response time and affect on maintenance activities such as snow plowing and street sweeping. Speed humps can also divert traffic resulting in adjacent streets experiencing higher traffic volumes. Another concern associated with speed humps is the increased noise in the vicinity of the measure because of braking and accelerating vehicles. And from an aesthetic perspective, a speed hump project does not incorporate an ornamental element (i.e., landscaping) which can detract the look of a neighborhood. All of these concerns were evident in the speed hump project along See-Gwun Avenue. During the discussion at the Committee-of-the-Whole Meeting, Staff welcomes input from the Village Board of Trustees on the use of speed humps in the Village. Funding Funding for the Neighborhood Traffic Study is currently scheduled through the 2010 budget year. This money has been allocated for consultant studies, post-studies and sign contractor costs. In 2009, much of the allocated funding will cover these expenses. However, in 2010, only costs associated with consultant post-studies will be necessary. Therefore, the remainder of this funding could go toward traffic calming projects should the Village Board desire. Beyond 2010, a decision will need to be made whether the Village Budget will include funding for traffic calming projects. And if so, how much on an annual basis? Should we move forward with a traffic calming program, Staff can monitor resident-initiated and Staff-driven projects in order to recommend funding amounts to the Village Board. In addition, Staff will also investigate other funding sources such as the Safe Routes to School program. This federal program provides grants for engineering projects to enhance safety around schools and promote walking and biking. Traffic calming projects around schools are eligible. Next Steps With feedback from the Village Board at the Committee-of-the-Whole Meeting, Staff recommends that a draft Neighborhood Traffic Calming Program be written. This formal document would articulate the details of the program including but not limited to goals, objectives, street qualification guidelines, the process, acceptable measures and funding. After input from various Village departments, it would be presented and discussed at a Safety Commission Meeting. It would then come before the Village Board for discussion and, ultimately, adoption. Staff anticipates this could be accomplished by the end of2009. Status of See-Gwun Avenue Speed Hump Project It cannot be argued that average speeds on See-Gwun A venue, a collector street, are lower since installation of the speed humps. 1-3 mph lower average speeds north of Lonnquist Boulevard and 8 mph lower average speeds south of Lonnquist Boulevard. However, the displacement of 500 vehicles per day onto adjacent lower classification streets has resulted in new traffic concerns in the neighborhood. The page 6of7 Neighborhood Traffic Study February 19, 2009 Village Board has agreed to remove the speed humps but only after an alternate plan is developed by Staff. Sign changes in this particular neighborhood as part of the Neighborhood Traffic Study were made in 2008. The final post-study report is not expected until later this fall. Therefore, should Staff consider an alternate project within the context of a traffic calming program, the earliest construction year would be 2010. And it's possible an alternate plan could include additional streets. While Staff supports removing the speed humps in 2009 even without an alternate plan in place, we understand the Village Board's concern with the original traffic conditions potentially returning to the street. Yet, Staff is hesitant about developing an alternate plan outside the scope of an established traffic calming program. Therefore, Staff recommends developing an alternate plan this year within the context of a traffic calming program, presenting it to the residents and Village Board at a public meeting, and targeting construction in 2010. Roll Curbed Streets with Adjoining Sidewalk In previous meetings with See-Gwun Avenue residents, a concern was raised by residents along the 700 block regarding the existing sidewalk that adjoins the curb. Only along this block on See-Gwun Avenue does the sidewalk adjoin the curb. Residents say vehicles are known to drive and park on the sidewalk because the 4" tall roll curb is easily mountable. Staff has investigated three options to address this concern. The following describes these options and their associated advantages and disadvantages. Staff welcomes the Village Board's input as to how to proceed. 1. Replace with 4" tall barrier curb Estimated cost: $60,000 Advantages: least expensive; minimum disruption Disadvantages: may not prevent all vehicles from driving/parking on sidewalk 2. Replace with 6" tall barrier curb Estimated cost: $140,000 Advantages: taller barrier Disadvantages: most expensive; potential drainage challenges; greater disruption to parkway 3. Relocate sidewalk off curb (drawing attached) Estimated cost: $100,000 Advantages: separation between vehicular & pedestrian traffic Disadvantages: disruption to existing landscaping; sidewalk closer to houses Staff also inventoried other neighborhood streets within the Village that have sidewalk adjoining roll curb as well as barrier curb. A majority of the streets with this layout are concentrated in the same neighborhood as See-Gwun Avenue. There is currently 16,200 feet of sidewalk adjoining roll curb and 5,200 feet of sidewalk adjoining barrier curb on neighborhood streets. At approximately $30 per foot to replace roll curb with barrier curb at the same existing height, the total estimated cost to do this work is $500,000. Should the Village Board wish to make it a policy to replace roll curb adjoining sidewalk with barrier curb when the street is resurfaced as part of the annual resurfacing program, it would take approximately 15 years to complete given the current condition of the streets in question. page 70f7 Neighborhood Traffic Study February 19,2009 Please include this item on the February 24th Village Board Meeting Agenda. Representatives from the Engineering Division will be in attendance to present these topics and answer questions. Attachments Descriptions of Traffic Calming Measures Drawing of Relocated Sidewalk along See-Gwun Avenue c: Village Clerk Lisa Angell h: lengineering\trajJiclca/mingIOl.19.09vb _ memo. doc Village of Mount Prospect Neighborhood Traffic Calming Program ftJJ TRAFFIC CIRCLE -ClJj '~1jJ; ~...;l. _.._:J .~ ~ --0--- ~ --.. _.. -. .... = ------", ~rr- '" -.---- . .- ~~!g ~~~ ~~n ,-, Description A traffic circle is a raised circular median in an intersection with counterclockwise traffic flow. Vehicles must change their travel path to maneuver around the circle. They are typically landscaped and have appropriate signage to safely guide motorists. Application . Streets where speed control is desired . Intersections where there is a high rate of right angle collisions Advantages . Reduces vehicle speeds through intersection . Breaks up sight lines on straight streets . Landscaping improves aesthetics at intersection . Can reduce right angle collisions Disadvantages . May impede emergency response . Narrowed travel lanes may cause bicycle / vehicle conflict . Creates physical obstruction in the travel way . Requires some on-street parking removal near intersection . May impede left turns by large vehicles Variations . Can include curb extensions . Can include diverter islands Special Considerations . Should be used in series or in conjunction with other traffic calming devices . Fire Department and Police Department input necessary with design . Lighting should be provided at intersection . May require educational campaign and learning period Cost: High Village of Mount Prospect Neighborhood Traffic Calming Program ~ CHICANE Q;;: i L ~~'I~ ~.----.... ~ ~~ ~ ,~." -- --~--~--_.-.-- ---=:rr---- .......,~ f5llVO ~3-' ~ - UL U---- ~ Description Chicanes create a curved street alignment that is designed to fit in existing rights-of-way. The curvilinear alignment requires additional maneuvering and reduces motorists' sight line. They can be landscaped and have appropriate signage or striping to safely guide motorists. Application . Streets where speed control is desired . Straight streets where reduced sight line is desired Advantages . Reduces vehicle speeds along street . Breaks up sight lines on straight streets . Landscaping improves aesthetics along street . Minimal impact on emergency response Disadvantages . Requires some on-street parking removal . Snow removal, leaf pick-up, street sweeping more difficult . Expensive since they are installed in series along street . Existing driveways and parkway trees may cause difficulty to design Variations . Traffic lanes can be narrowed to have greater impact on vehicle speeds Special Considerations . Cannot be used where right-of-way is limited Cost: High Village of Mount Prospect Neighborhood Traffic Calming Program f(!;j CHOKE POINT Ogd~ ~ LD ~ ~d-'::;:':ST~~'~'~ -~-~-~-----~~----- EJB -l~~~"",'h-{"~ lfii 11 15, Description A choke point is a segment of street narrowing where existing street edges or curbs are extended toward the center of the street. They are typically landscaped and have appropriate signage to safely guide motorists. Application . Streets where speed control is desired . Shorten midblock pedestrian crossings Advantages . Narrowed street section may contribute to lower vehicle speeds . Landscaping improves aesthetics along street . Minimal impact on emergency response Disadvantages . Requires some on-street parking removal . Snow removal, leaf pick-up, street sweeping more difficult . Narrowed travel lanes may cause bicycle / vehicle conflict Variations . Can include crosswalk at high pedestrian crossing areas Special Considerations . Should be used in series or in conjunction with other traffic calming devices Cost: Moderate to high depending on landscaping and storm sewer adjustments Village of Mount Prospect Neighborhood Traffic Calming Program rr;; MEDIAN / ENTRY ISLAND I~ f1~ ~tfj \", _1'" --" . a. , ,j ____u. ,~ L/ ~m. Description A median / entry island is a raised island in the center of a two-way street. They can identify the entrance to a residential area when placed near the intersection of an arterial street. They are typically landscaped. Application . Streets where speed control is desired . Define entry to a residential area Advantages . Narrowed and deflected street section may contribute to lower vehicle speeds . Notifies motorists of change in street character . Landscaping improves aesthetics along street . Minimal impact on emergency response . Breaks up sight lines on straight streets Disadvantages . Requires some on-street parking removal . Need for maintenance . Narrowed travel lanes may cause bicycle / vehicle conflict . Creates physical obstruction in the travel way Variations . Can incorporate neighborhood identification signing and monument Special Considerations . Cannot be used on existing narrow streets . Care must be taken not to create sight obstruction near intersection Cost: Moderate to high depending on landscaping Village of Mount Prospect Neighborhood Traffic Calming Program ~ CURB EXTENSION ia I I I I -~~---- Of~----- ~ I KjO I I ~ I Description A curb extension is a segment of street narrowing at an intersection where existing street edges or curbs are extended toward the center of the street. They have appropriate signage to safely guide motorists. Application . Wide streets with a significant amount of traffic . Intersections where a significant amount of pedestrians cross the street Advantages . Reduces pedestrian crossing distance and time . Makes pedestrian crossing points more visible to motorists . Prevents on-street parking near intersection . Minimal impact on emergency response Disadvantages . Snow removal, leaf pick-up, street sweeping more difficult . Narrowed travel lanes may cause bicycle / vehicle conflict Variations . Install on one or both intersecting streets . Extend edge or curb on one or both sides of streets Special Considerations . Should not be used on existing narrow streets Cost: Moderate to high depending on landscaping and storm sewer adjustments Village of Mount Prospect Neighborhood Traffic Calming Program ~ PEDESTRIAN REFUGE I C - - ~~ - ~ - - - - Description A pedestrian refuge is a raised island in the center of a two-way street. The island has a gap in the curb creating two segments allowing passage for pedestrians. They mayor may not be landscaped but have appropriate sign age to safely guide motorists. Application . Wide streets with a significant amount of traffic . Midblock locations where a significant amount of pedestrians cross the street Advantages . Allows pedestrians to cross half the street at a time . Makes pedestrian crossing points more visible to motorists . Minimal impact on emergency response Disadvantages . Requires some on-street parking removal . Narrowed travel lanes may cause bicycle / vehicle conflict . Creates physical obstruction in the travel way Variations . Use brick or textured pavement as landscaping alternative Special Considerations , . Cannot be used on existing narrow streets Cost: Moderate to high depending on landscaping Village of Mount Prospect Neighborhood Traffic Calming Program fSj DlVERTER ~ ~. u --~-- g!:!) WJ ------- -------. m!~~ lio') -,~ ~9 rl.~ 1.-.....--... I Description A diverter is a physical barrier that prevents access to specific legs of an intersection. They mayor may not be landscaped but have appropriate sign age to safely guide motorists. Application . Streets where volume control is desired . Prevent cut through traffic by eliminating entry onto a residential street Advantages . Reduces traffic volume on street . Bicycle and pedestrian access still provided Disadvantages . Prohibits or limits access to local homeowners . Prohibits or limits access to emergency vehicles . Traffic may shift to an adjacent street or neighborhood Variations . Full diagonal diverter bisects an intersection . Semi-diverter prohibits access into a residential area but allows vehicles to exit Special Considerations . Care must be taken not to shift problem to an adjacent street or neighborhood . Fire Department and Police Department input necessary with design Cost: Moderate to high depending on landscaping Village of Mount Prospect Neighborhood Traffic Calming Program ~ MEDIAN BARRIER gJ~ ~tO_ ~ -6 ~~rllJ ~~ ('J I -q~ . '.~-----'-" ~ . r~ . . 1J1W ,,---_._'--.:~ Description A median barrier is a raised island along the center of a two-way street extending through an intersection to prevent specific turning movements. They mayor may not be landscaped but have appropriate signage to safely guide motorists. Application . Streets where volume control is desired . Need to limit cut through traffic by controlling left-turn and side street through movements Advantages . Reduces traffic volume on side street . Reduces potential for collisions at intersection by eliminating left-turns . Landscaping improves aesthetics along street . Breaks up sight lines on straight streets Disadvantages . Limits access to local homeowners and emergency vehicles . Increase in V-turns at ends of medians . May require some on-street parking removal . Creates physical obstruction in the travel way . Traffic may shift to an adjacent street or neighborhood Variations . Various widths and lengths Special Considerations . Care must be taken not to shift problem to an adjacent street or neighborhood . Fire Department and Police Department input necessary with design . Important to maintain pedestrian and bicycle access Cost: Moderate to high depending on design and landscaping Village of Mount Prospect Neighborhood Traffic Calming Program rg STREET CLOSURE ~l'~'~:~~~r;;~~'~~ ""'y" ," '--:' '1'.. u """:""'. ',\"" " , . .;~- " ~ ' :~ "....r. . '. .' . ,~ . ~l Description A street closure is a physical barrier across a street eliminating all vehicle access. Appropriate sign age is used to warn motorists of condition. Application . Streets where volume control is desired . Prevent cut through traffic by eliminating access onto a residential street Advantages . Reduces traffic volume on street . Reduces noise associated with vehicles Disadvantages . Prohibits access to local homeowners . Prohibits access to emergency vehicles . Traffic may shift to an adjacent street or neighborhood Variations . Midblock closure creating a dead-end street Special Considerations . Care must be taken not to shift problem to an adjacent street or neighborhood . Fire Department and Police Department input necessary with design . Important to maintain pedestrian and bicycle access Cost: Moderate Village of Mount Prospect Neighborhood Traffic Calming Program ~ TURN RESTRICTION 7AM-9AM 4PM-6PM MON . FRI Description A turn restriction limits or prohibits specific turning movements by way of signage. Application . Streets where volume control is desired . Prevent cut through traffic by eliminating access onto a residential street Advantages . Reduces traffic volume on street . Inexpensive to install . Can be tailored to be time of day and day of week specific Disadvantages . Limits access to local homeowners . Requires enforcement since no physical barrier . Traffic may shift to an adjacent street or neighborhood Variations . Can use striping, pavement markings and/or a physical barrier to emphasize turn restriction Special Considerations . Care must be taken not to shift problem to an adjacent street or neighborhood Cost: Low 700 BLOCK SIDEWALK LAYOUT 700 706 A MH ,.@ __ 1 ~l "":up . :CB . . : CB :@,.. 'F~ @ ,. 701 ct ~ -U 17": '~-0--- 707 _i! : A Z~~i' -~09 i " i o ~ ~ .'''' ~"b~. ~l{] 716 718 ~ .,.. ~ :32" D : A <?f 25": B ...~P: @, 18"': . c CD o CO D LONNQUIST BLVD