Application of the TEXAS Model for Analysis of Intersection Capacity and Evaluation of Traffic Control Warrants

Details

• Creators:
  Lee, Clyde E. ; Savur, Vivek S. ; Grayson, Glenn E.
• Corporate Creators:
  University of Texas at Austin. Center for Highway Research
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Indicators (Instruments) Level Of Service Microscopic Traffic Flow Performance Tests Signals Signal Warrants Simulation Traffic Control
• Publication/ Report Number:
  l84-4F
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Final Report
• Corporate Publisher:
  University of Texas at Austin. Center for Highway Research
• Abstract:
  The TEXAS Model for Intersection Traffic is a microscopic simulation package describing the behavior of individual driver-vehicle units at isolated intersections. This report deals with two applications of this model, namely determining the capacity of an intersection and analysis of warrants for traffic signal control. Service volume has been related quantitatively to five subjectively defined levels of service by identifying suitable performance indicators, such as average queue delay, percent of vehicles required to stop, and percent of vehicles required to slow to below 16 kpb (10 mph). These indicators are computed routinely during the simulation process and can be used for evaluating the performance of existing or proposed unsignalized intersections operating under various traffic volumes and different types of control. In the signal warrant analysis, effectiveness of various types of control is judged on the basis of total cost. This cost includes costs associated with user stopping and delay and costs related to providing, operating, and maintaining traffic control devices. It was concluded that peak-hour traffic volumes which result in unreasonable delay may be used as a criterion for judging the need to replace two-way stop control with signals, while total intersection costs should be considered when replacing all-way stop control with signals. Another finding indicated that fewer vehicles were delayed and that the total costs of controlling and using an intersection were lower under traffic actuated signal control than under pretimed control.
• Format:
  PDF
• Funding:
  3-18-72-184
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:00b62e02fc61aa9584494b64f295a36b21006cf87b0f5cd12d36e083ee43ce00cb4cbc7ef6128bc810c2d9ccb50c272925295a3199dc0b1aa7c10c4b3b901cf9
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85603/dot_85603_DS1.pdf
• File Type:
  [PDF - 2.48 MB ]