MOVING MERGE--A NEW CONCEPT IN RAMP CONTROL

MOVING MERGE CONTROL SYSTEMS ARE DEVICES INSTALLED ON FREEWAY ENTRANCE RAMPS TO HELP DRIVERS ENTER A FREEWAY FOR THOSE SITUATIONS WHERE THEY WOULD OTHERWISE HAVE DIFFICULTY IN DETERMINING ADEQUATE SIZE FREEWAY GAPS. IN THE MOVING MODE SYSTEM ACCEPTABLE GAPS IN THE RIGHT LANE OF THE FREEWAY LANE, THOSE WHICH WILL PERMIT SAFE MERGING, ARE SHOWN AS MOVING BANDS OF GREEN LIGHTS IN THE RAMPSIDE DISPLAY. BY DRIVING BESIDE ONE OF THESE BANDS A RAMP VEHICLE WILL BE PLACED IN THE PROPER RAMP MERGING POSITION FOR ENTERING A SAFE AVAILABLE GAP. IN THE STOPPED MODE OPERATION, RAMP VEHICLES ARE REQUIRED TO STOP AT A TRAFFIC SIGNAL LOCATED ON THE RAMP SHOULDER. VEHICLE DETECTORS IN THE RIGHT LANE OF THE FREEWAY ARE USED TO SEARCH FOR GAPS WHICH WILL PERMIT SAFE MERGING AND THE TRAFFIC SIGNAL IS TURNED GREEN AT THE PROPER TIME.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1586080
• Authors:
  • True, J
  • Rosen, D
• Publication Date: 1973-12

Media Info

• Pagination: p. 229-45
• Serial:
  • Public Roads
  • Volume: 37
  • Issue Number: 7
  • Publisher: Federal Highway Administration
  • ISSN: 0033-3735
  • Serial URL: https://www.fhwa.dot.gov/publications/publicroads/
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Freeway operations; Merging traffic; Ramps; Traffic control; Traffic control devices; Vehicle detectors
• Old TRIS Terms: Traffic control systems
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226852
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 5 1974 12:00AM