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Roadway Information and
Traffic Monitoring System Program

Traffic Volume Counts


Traffic counts are taken at:

  • 3,000 sites on all types of public roads throughout New Jersey
  • 1,000 sites a year over 48 hour period, every three years
  • As needed to support NJDOT functions
Traffic Monitoring System (TMS) is required by the Federal Highway Administration (FHWA). Traffic volume is classified by vehicle types (number of axles) and weigh-in-motion (WIM) to identify commercial traffic.

To view counts on Live Report webpage:

Annual Region Factors:

2012 Seasonal and Axle Corrections factors based on the geographical regions (pdf 56k)

Shape file with regions (28m)

Developed from Automatic Vehicle Classification (AVC) and Weigh-in-Motion (WIM) stations to estimate average axles/vehicle. These factors are applied to counts taken with tubes to adjust axle-pair counts to vehicles and trucks with three or more axles.

Traffic Count 2006-2011 data set with AADTs that can be imported into a GIS application (zip 800k).
 
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  Department of Transportation
  P.O. Box 600
  Trenton, NJ 08625-0600
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  Last Updated:  March 15, 2013