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Engineering Division
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 Operations Coordinator at 203-622-6487. When installing these devices, the Department of Public Works 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 Department of Public Works and must include your name, address, daytime phone number and a detailed description of the concern. All letters should be addressed to: 

James W. Michel, Chief Engineer 
Department of Public Works
101 Field Point Road
Greenwich, CT 06830

Reporting a Problem with a Traffic Sign or Signal
During business hours, please contact the Highway Division at 203-622-7766. After business hours:

  • Traffic sign problems: Please leave a message for the Highway Division at 203-622-7766.
  • Traffic signal problems: 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 Engineering Division. 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 at which or below 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.

Traffic Calming
The Town of Greenwich Neighborhood Traffic Calming Program is currently on hold. The program can be found under the TRAFFIC PLANS link.

All questions regarding projects on these roads should be directed to the CTDOT http://www.dot.state.ct.us/

     Connecticut Department of Transportation (CTDOT) Roadways:

    I-95, the Merritt Parkway and Route 1 (aka Putnam Ave, Post Rd) are State owned Roadways.

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Town Hall - 101 Field Point Road, Greenwich, CT 06830. Phone: (203) 622-7700. Copyright © , Town of Greenwich. All rights reserved.