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Home My WebLink AboutItem 06.k Date: 7 AP Staff reco Display S Passage and use Driver Fe Overview The City consisten City has feedback DSDS Po updated signs. Staff revi Primary  Why perm appli Support  A cop ________ Monica H Operatio Financial I Related Do Communit 7 December PPROVAL O ommends a Signs (DSDS of this moti of both te eedback Sig w adopted a nt applicatio continued k signs that olicy to refle to reflect iewed the D Issues to C was a polic manent DSD cations for p ting Inform py of the DS __________ Heil, PE ons and Main mpact: $ ocuments (CIP ty Values: G 2015 OF THE DY adoption of ) Policy for t ion establish mporary an n Policy orig Driver Feed on of perm to deploy can be rot ct MnDOT I the require DSDS Policy w Consider y update ne S equipmen permanent ation SDS Policy is _________ ntenance En $0 P, ERP, etc.): Good Value for YNAMIC SP the followi the City of L hes standard nd permane ginally adop dback Sign anent drive y its mobile ated throug ntelligent T ments and with the City eeded? The nt. The prev DSDS equip attached. ngineer Budge r Public Service EED DISPL ng motion: akeville. dized proce ent DSDS w pted in 2011 Policy in 20 er feedback e radar trai ghout the C Transportatio application y Council at e City now o vious policy pment. eted: N/A es Ite LAY SIGNS Move to a sses and pro within the C . 011 to defin signs withi iler and ha City. The po on System n ns for both t its Novemb owns and op y only addre A Source: em No. (DSDS) PO approve the ocedures fo City, and rep ne requirem in the City. as acquired olicy has be nomenclatu temporary ber 23, 2015 perates both essed the re N/A OLICY Dynamic S or the install places the C ents and en Since then portable d een renamed ure and has and perma 5 work sessio h temporary equirements peed ation City’s nsure n, the driver d the been anent on. y and s and DYNAMIC SPEED DISPLAY SIGNS Policy 5.03 1) PURPOSE a) The City of Lakeville, Minnesota finds that it is in the best interest of the City to identify guidelines for the consideration and installation of Dynamic Speed Display Signs (DSDS). 2) OBJECTIVE a) DSDS is a recommended safety strategy to increase driver attention and speed awareness, and to promote speed limit compliance. This policy identifies guidelines for the consideration and installation of DSDS to avoid overuse, ensure consistency and maintain effectiveness. 3) GENERAL a) DSDS is a device that detects and displays an approaching vehicle’s current speed back to the driver. If an approaching vehicle is exceeding the posted speed limit, the vehicle’s speed will be displayed and begin flashing. The display of the vehicle’s current speed is intended to prompt the driver to slow down. b) Speed data from the DSDS is collected and reviewed by City staff to review concerns of speeding, evaluate potential needs for additional enforcement or consider other measures for controlling vehicle speed. c) DSDS have been proven to have a speed‐reducing effect in certain applications such as: i) School zones ii) Transition zones iii) Work zones iv) Other speed critical areas d) The City’s DSDS program includes both temporary and permanent signs. 4) TEMPORARY DSDS MANAGEMENT a) The City’s temporary DSDS equipment consists of the following: i) Mobile Radar Trailer: The City’s Police Department operates mobile radar trailer units to display current vehicle speeds. This equipment is used to promote posted speed limit compliance and is not used to collect or record traffic volume or vehicle speed. The unit is placed along streets during daylight hours for a period of 1 – 2 days. Mobile radar trailer units, including location, placement and hours of operation, are managed under the supervision of the Police Chief or his/her designee. ii) Portable Driver Feedback Signs: The City’s Public Works Department operates Portable Driver Feedback Signs to display current vehicle speed and collect vehicle speed data. These signs are intended to be installed on a short‐term, temporary basis to increase driver attention and speed awareness, and to promote speed limit compliance in specific applications such as maintenance or work zones. Speed data is collected and reviewed by Public Works Department staff. Portable Driver Feedback Signs are managed under the supervision of the Public Works Director or his/her designee. 5) GUIDELINES FOR PORTABLE DRIVER FEEDBACK SIGN INSTALLATION a) The usage of Portable Driver Feedback Signs will be determined by the Public Works Director or his/her designee. b) Public Works Department staff will review requests for Portable Driver Feedback Signs and provide a recommendation to the Public Works Director or his/her designee. i) Portable Driver Feedback Sign locations shall have a minimum average annual daily traffic volume of 500 vehicles per day (as determined by City staff) or roadway geometrics that present additional challenges with speeding traffic. c) Recommended Portable Driver Feedback locations will be placed on a Sign Installation Schedule based on priority as determined by the Public Works Director or his/her designee to facilitate service demand and establish priorities for deployment locations. New sign installation locations may receive higher priority over previous installation sites (e.g., recurring requests for the same location). Public Works Department staff will review the Sign Installation Schedule on a quarterly basis. d) The following guidelines will be used in determining the location, placement and hours of operation of Portable Driver Feedback Signs: i) Signs will be installed for a period of approximately 21 calendar days. Signs may be removed early due to vandalism or technical difficulties. ii) The City may accommodate up to six installation sites per year during the months of May through October. The sequence of sign placement will be based on the Sign Installation Schedule as described in Section C above. iii) Specific sign locations will be determined by Public Works Department staff. Sign locations may be affected by several factors including, but not limited to, sign visibility, underground utilities, sight lines for radar tracking of vehicles, tree canopy impacting solar cells, street geometrics and other factors. iv) Signs shall be placed within public right‐of‐way, public easements or City‐owned property. v) Sign posts shall be setback a minimum of 24‐inches from the face of curb or trail. 6) PERMANENT DSDS MANAGMENT a) The City’s permanent DSDS equipment consists of the following: i) Fixed‐Location Driver Feedback Signs: The City’s Public Works Department operates permanent Fixed‐Location Driver Feedback Signs to display current vehicle speed and collect vehicle speed data. These signs are intended to be permanently installed to increase driver attention and speed awareness, to promote speed limit compliance and to assist in addressing specific speeding concerns within the community. Speed data is collected and reviewed by Public Works Department staff. Fixed‐Location Driver Feedback Signs are managed under the supervision of the Public Works Director or his/her designee. 7) GUIDELINES FOR PERMANENT DSDS INSTALLATION a) The location of Fixed‐Location Driver Feedback Signs will be determined by the City Council. i) An engineering study may also be required prior to City Council approval. b) The Public Works Director or his/her designee will review requests for Fixed‐Location Driver Feedback Signs and provide a recommendation to the City Council. c) The following guidelines will be used in evaluating requests for Fixed‐Location Driver Feedback Signs: i) Roadway Classification: Major Collector or Arterial ii) Average Annual Daily Traffic (AADT): Greater than 5,000 vpd iii) Average Speeds: Exceed Posted Speed Limit iv) Driveway Access: Greater than 10 driveways per 1,500 feet. v) Roadway History: Documented speed and safety problems 8) SPEED DATA MANAGEMENT a) The Public Works Department is responsible for collection, management and storage of speed data collected from the Portable and Fixed‐Location Driver Feedback Signs. 9) LIMITATIONS a) While the City fully intends to meet the guidelines established in this policy, there may be times when this is not feasible. Issues including, but not limited to, budget constraints, critical equipment failure, weather or other emergencies may prevent the City from meeting the guidelines established herein. City staff must exercise both discretion and professional judgment in determining the schedule and deployment of DSDS equipment.