Research Report Agreement T1803. Task 38 Dual Loop ErrorResearch Report Agreement • March 14th, 2002
The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. This document is disseminated through the Transportation Northwest (TransNow) Regional Center under the sponsorship of the U.S. Department of Transportation UTC Grant Program and through the Washington State Department of Transportation. The U.S. government assumes no liability for the contents or use thereof. Sponsorship for the local match portion of this research project was provided by the Washington State Department of Transportation. The contents do not necessarily reflect the official views or policies of the U.S. Department of Transportation or Washington State Department of Transportation. This report does not constitute a standard, specification, or regulation
Research Report Agreement T2695 Task 61 Single Loop Video DataResearch Report Agreement • January 22nd, 2007
The speed estimation parameter, g is often regarded as a constant that converts the occupancy into density, and the space mean speed is then calculated by the fundamental relationship between volume, density, and space mean speed. Because both traffic volume and lane occupancy are direct measurements from single loops, and T is a known variable from the system configuration, assuming a constant value of g for speed estimation with Equation (2-1) is simple and has been employed by many state departments of transportation. The Chicago Traffic Systems Center uses g = 1.90 (Aredonk, 1996), and WSDOT used g = 2.4 for a number of years until recently.
Final Research Report Agreement T4118 Task 42 Traffic Sensor DataResearch Report Agreement • January 11th, 2011
SMSHResearch Report Agreement • December 6th, 2018
