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Traffic Signs, Signals, and Regulations
Obtaining Information
You can obtain information on new traffic signs and pavement markings, and traffic signal options
for your neighborhood by contacting the Traffic Engineering Division at 203-622-7760. When
installing traffic signals, the Traffic Engineering Division follows Federal guidelines
contained in the Manual on Uniform Traffic Control Devices which can be found at
http://mutcd.fhwa.dot.gov.
Requesting Installation
Requests can be made for a traffic light, traffic sign such as a speed limit or stop sign
and traffic lines such as a crosswalk to be installed in your area. A written request
must be made to the Traffic Engineering Division and must include your name, address,
daytime phone number and a detailed description of the concern. All letters should be
addressed to:
Garo B. Garabedian, Traffic Engineer
101 Field Point Road
Greenwich, CT 06830
Traffic Calming Devices
The Town of Greenwich is currently working on but has not yet established a traffic
calming policy. Requests for devices such as speed humps can be submitted to the
above address and will be evaluated on an individual basis.
Reporting a Problem with a Traffic Sign or Signal
During business hours, please contact the Traffic Engineering Division at 203-622-7760.
After business hours, to report a problem with a traffic sign, please leave a message
for the Traffic Engineering Division at 203- 622-7760. To report a problem with a
traffic signal after business hours, please contact the Greenwich Police
Department at 203-622-8000.
Speed Limits
The STC sets regulatory speed limits on state and local roads based on an engineering
investigation by the Division of Traffic Engineering. Principal factors considered are:
- road type and surface (curve, hill, etc.)
- location and type of access points (intersections, entrances, etc.)
- existing traffic control devices (signs, signals, etc.)
- accident history
- traffic volume
- sight distances
- test drive results
- radar observations
Radar speed observations are an important part of the traffic investigation. When
choosing a speed, drivers take many roadway environment factors into consideration.
Therefore, the speed that the majority of people consider prudent is an important value.
Data is collected by performing radar checks at selected locations on the roadway
under ideal driving conditions. A technical analysis is done on the results to determine
the 85th percentile speed. This is the value indicating the speed under which most
(85%) drivers are traveling. Experience has shown that a posted speed limit near this
value is the safe and reasonable speed. However, there are exceptions (high accident
frequency, volumes, etc.).
Engineering judgment is a very important tool. The traffic investigator must use knowledge
of nationally accepted principles combined with experience to assign the safe speed.
Through Truck Prohibition (No Thru Trucks)
A through truck is one that passes through a town without having an origin or
destination in that town. If a truck originates or has a scheduled stop within that town,
it would not be affected by a through truck prohibition.
All questions regarding ConnDOT projects should be directed to the Connecticut
Department of Transportation at http://www.dot.state.ct.us/
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