DOTD support for UTC project : development of an optimal ramp metering control strategy for I-12, [research project capsule].

Details

• Creators:
  Ishak, Sherif
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  Cost Effectiveness Merging Control Ramp Metering Traffic Congestion Traffic Delay Traffic Simulation Travel Time
• Publication/ Report Number:
  14-1SS
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  From June to November of 2010, the Louisiana Department of Transportation and
  
  Development (DOTD) deployed ramp metering control, using a simple pre-timed operation
  
  with a fixed cycle length (2 seconds of green/2 seconds of red), along a 15-mile section of I-12
  
  in Baton Rouge, LA. Ramp metering was implemented to reduce congestion, provide a safer
  
  merge operation at freeway entrances, and improve travel time reliability of the corridor.
  
  A recent evaluation of the effectiveness of the ramp metering strategy was inconclusive
  
  in determining whether the fixed time operation of the control system yielded significant
  
  reductions in congestion along the corridor. Therefore, the study recommended further
  
  investigation to examine the feasibility of applying dynamic ramp metering algorithms on I-12,
  
  wherever applicable. Demand responsive and coordinated ramp metering strategies involve a
  
  system where the signals change every few seconds in response to freeway conditions locally
  
  or at adjacent interchanges. The signals may work as individually or in coordinated clusters to
  
  resolve complex traffic problems and reduce congestion along the freeway. In either case, the
  
  dynamic control of the signals is feasible through Freeway Control Regulators (algorithms) that
  
  tend to optimize the capacity of the freeway.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:270ac8e9d59f1d52107dc443717c63274bdd7e805efd495fe317ee08d1a5a4a7
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26690/dot_26690_DS1.pdf
• File Type:
  [PDF - 168.72 KB ]