Chapter 13.28
TRAFFIC CALMING DEVICES

Sections:

13.28.010    Erection and maintenance of traffic calming devices.

13.28.020    Guidelines for installation of speed humps and other traffic calming devices.

13.28.010 Erection and maintenance of traffic calming devices.

A.    In the regulation and supervision of traffic, the Director of Public Works is authorized to place, erect and maintain upon the public highways of the City such traffic calming devices as the Council may direct, at the locations designated by the Council or as determined by the City Manager or his or her designee.

B.    In accordance with Chapter 2.12, the City Manager or his or her designee may establish such regulations and standards as are necessary to accomplish the purposes and intent of this chapter. (Ord. 2011-29 § 1, 2011/Ord. 2002-36 § 1 (part), 2002/prior code § 13-75)

13.28.020 Guidelines for installation of speed humps and other traffic calming devices.

Except as specifically determined necessary for the safety and control of vehicles, pedestrians, traffic speed, and/or traffic volume, the City Manager or his or her designee shall adhere to the following guidelines for the installation of speed humps and other traffic calming devices on the public highways of the City:

A.    Traffic Signs and Pavement Markings. Traffic calming devices, including, but not limited to, flat-top speed humps or speed tables, raised walkways and raised intersections, and speed humps, should be painted with distinctive markings, which should include reflective tape or paint, and traffic signs indicating the presence of the traffic calming device should be placed on the right-hand side of the public highway at the approach to each such traffic calming device.

B.    Restrictions on Slope or Grade of Public Highway. Speed humps and other traffic calming devices should not be placed on a public highway where the slope is 8% or more. Placement of humps on slopes increases the potential for vehicles to lose control when crossing a speed hump particularly when going down or up a steep grade. Additionally, there can be sight line problems that occur for drivers going up a grade.

C.    Restrict Placement in Front of Driveways. Speed humps and other traffic calming devices should not be placed in front of a driveway.

D.    Distance Between Speed Humps and Other Traffic Calming Devices. Speed humps and other traffic calming devices should be spaced no less than approximately 150 feet apart and no more than approximately 300 feet apart along a public highway.

E.    Avoid Conflicts with Utility Access Points. Speed humps and other traffic calming devices should not be placed on or near underground utility access points, boxes, vaults, and manhole covers.

F.    Distance from an Intersection or Stop Sign. Speed humps should not be placed within 75 feet of an intersection or within 100 feet of a stop sign.

G.    Proximity to Street Lights. Speed humps and other traffic calming devices should be located under street lighting whenever possible.

H.    Restrict Placement on Cul-de-Sacs and Dead End Streets. Speed humps and other traffic calming devices are not recommended for placement on dead end streets or cul-de-sacs. However, if the dead end street provides access to a public destination, such as a park, this restriction may be waived.

I.    Minimum Visibility for Approaching Drivers. Speed humps and other traffic calming devices should be visible from a vehicle within 100 to 200 feet from its approach. (Ord. 2011-29 § 1, 2011)