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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/7340

Title: Performance Evaluation Of Two Toll Plazas On The Accra – Tema Motorway
Authors: Opoku – Boahen, Richter
Adams, C.A.
Salifu, Mohammed
Keywords: Performance Characteristics
Toll Lanes
Manual lane
E – zone Lane
Accra – Tema motorway
Accra toll plaza
Tema toll plaza
Ghana
Issue Date: 2013
Publisher: International Refereed Journal of Engineering and Science (IRJES)
Citation: International Refereed Journal of Engineering and Science (IRJES),Volume 2, Issue 5(May 2013), PP.16-23.
Abstract: The question of the number of toll lanes to open on the Accra – Tema motorway and indeed on various tolling facilities in Ghana to effectively handle arriving traffic and the long queues they generate has been of interest for a while now. Until now this question has, at best been addressed only on ad-hoc basis without any prior scientific analysis. Model prediction of the behaviour of toll lanes under traffic loading is only possible if the performance characteristics of the lane types are known . Traffic flow through the toll lane types of both plazas on the Accra –Tema motorway in Ghana was videotaped at peak hours and analyzed to ascertain their performance characteristics. The manual lanes performed with a capacity of 5.9 veh/min while the E – zone lane’s capacity was established as 8.6 veh/min. The mean inter-vehicle time per vehicle for the manual lanes was 10 seconds when considering peak 15 min capacity periods with a mean service time and headway of 5 seconds per vehicle respectively, standard deviation of service times within the peak 15 min capacity periods was 3 seconds. The 85th percentile delay of vehicles in the manual lanes at the Accra toll plaza consistently gave a level of service of F while that at the Tema plaza was found to be at best D. Level of service of the E -zone lanes at both plazas was A due to low patronage. Proportion of toll lane type usage on the motorway was ascertained as 97% manual lane and 3 % E – zone lane. The findings of this research allows for the application of queuing models in decision making in respect of the number of manual and E – zone lanes to open.
Description: Article published in International Refereed Journal of Engineering and Science (IRJES), 2013.
URI: http://hdl.handle.net/123456789/7340
ISSN: 2319-183X
Appears in Collections:College of Engineering

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