Advocates for Calm Traffic
Norwalk, Connecticut
Traffic Calming Guidelines for Norwalk

The following criteria are in use by our Public Works Department (DPW) -- and were influenced by the South Western Regional Planning Agency (SWRPA)) Traffic Calming Guidelines. The entire Traffic Calming Toolbox that was developed by SWRPA in 1998 is available for reference at the DPW office at City Hall.
Click here for the March 18, 2002 ACT Report to the Police Commission
TRAFFIC CALMING DEVICES
Speed reduction
enforcement, public awareness, speed humps, entrance treatments, pavement treatment
Volume Reduction
diverters, cul-de-sac, choke points, one way operation
Pedestrian Safety
pedestrian refuges, curb extensions, raised crosswalks
SPEED HUMP CRITERIA

Speed
humps are rounded raised areas of pavement typically 12 to 14 feet in length
with a height of 3 inches, placed
in a series and spaced 250 to 600 feet apart.
Speed
humps are to be considered only after traffic studies are done to document
traffic volumes and speeds. Streets
that experience significant "cut-thru" traffic will receive priority for speed humps. Dead end roads generally would not
warrant speed humps.
Streets
under consideration will generally be local residential streets with average
daily traffic volume of 3000 vehicles
or less. Installation may be warranted on higher volume streets with special justification. Collector Streets that are not
designated on the Emergency Response Route Map may be considered.
Streets
are to have no more than two travel lanes, with a width of less than 40 feet and
road grades of less than 8
percent approaching the speed hump.
Speed
humps
should be installed only where the minimum safe stopping sight distance can be
provided. Humps are
to be avoided in horizontal curves of less than 300 feet centerline radius.
Neighborhood
support is required with no less than two-thirds (66%) majority of the residents
in favor of the speed
bumps.
Streets
that would not qualify for installation of speed humps with city funding due to
low traffic volumes may petition
the city to install speed humps under the Freeholders Procedure. The residents would be assessed the cost of the
work which would be included in the tax bill in the year following the installation.
Slow
Down!
The DPW currently has funds in its budget for traffic calming measures. Speed humps are no longer the main focus when considering traffic calming measures. A multi-pronged approach is now being considered.