An Analysis on Efficiency and Equity of Fixed-Time Ramp Metering

DOI: 10.4236/jtts.2013.32A006   PDF   HTML     4,461 Downloads   6,461 Views   Citations


Various traffic management strategies have been developed to alleviate the congestion on freeways. The equity issue has been considered as one of the major challenges for the implementation of some traffic control strategies, especially ramp metering. This paper presents a comparative evaluation of the efficiency and equity performance of a traffic control strategies namely Fixed Time Ramp Metering (FTRM). Instead of focusing on a single equity measure and/or indicator, different approaches to the equity concept are discussed and various equity measures are examined. The equity and efficiency performance of traffic control strategies are compared and evaluated by incorporating them into the simulated corridor. The Bosporus Bridge of Istanbul O-1 Freeway, Turkey is used as a test-bed for the simulation model and the control strategy is employed through microscopic traffic flow simulation software, VISSIM AG. The findings from the simulations show that the equity and efficiency properties of the network vary with the measures and indicators taken into account. The results also suggest that the trade-off between equity and efficiency can be observed for some measures, whereas regarding to other measures the trade-off is not validated.

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A. Kesten, M. Ergün and T. Yai, "An Analysis on Efficiency and Equity of Fixed-Time Ramp Metering," Journal of Transportation Technologies, Vol. 3 No. 2A, 2013, pp. 48-56. doi: 10.4236/jtts.2013.32A006.

Conflicts of Interest

The authors declare no conflicts of interest.


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