Digital Computer Programs for the Ramp Metering System on the Gulf Freeway

Details

• Creators:
  Ritch, Gene P.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration ; Texas Highway Department
• Subject/TRT Terms:
  • Ramp metering
  • Digital computers
  • Data management
  • Subroutines
  • Real time control
  • Analysis
  • Freeways
  • interrupt structure
  • analysis techniques.
• Publication/ Report Number:
  139-12
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  Ramp metering has proven to be an effective means of improving the operational efficiency of an over-crowded urban freeway. This report discusses the digital computer programs used to implement freeway ramp control on a section of the inbound Gulf Freeway in Houston, Texas. The operational characteristics of the supporting detection, transmission, and signal control subsystems are considered. The data acquisition, control, and system supervisor programs are executed in a priority assigned fashion that is based on the control philosophy and enabled by the architecture of the digital computer. The programming techniques used in evaluating the effectiveness of freeway ramp control are described.
• Format:
  PDF
• Funding:
  2-8-69-139
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85094/dot_85094_DS1.pdf
• File Type:
  [PDF - 1.69 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:5d9e8412844282f1178a1d87361e46143b2ebe3282f2c251ffbb4f4214ae7a8eeaf32c9a0ed2236886c46286e8e023c0822f021f55ec91a6949851bb350e8131