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

File Language:
English


Details

  • Creators:
    Ishak, Sherif
  • Corporate Creators:
    Louisiana Transportation Research Center
  • Subject/TRT Terms:
  • 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
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/26690/dot_26690_DS1.pdf
  • File Type:
    Filetype[PDF - 168.72 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:270ac8e9d59f1d52107dc443717c63274bdd7e805efd495fe317ee08d1a5a4a7
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