PERFORMANCE AND DESIGN OF TWO INTERSECTIONS IN TRIPOLI CITY

Abstract

ABSTRACT The increasing numbers of motor vehicles in Libya, all kinds from private cars, private transport, taxis and trucks and heavy equipment an indication of the severity of congestion on major roads between main and interior cities, there is continual congestion, traffic congestion is frequently a problem through weekdays between most of the intersections in the cities. A methodology was proposed to reductions in delay and queuing traffic as well as improvement in mobility via a case study optimization using Indonesian Highway Capacity Manual IHCM to evaluating the performance of existing intersections and optimizes the Performance for each intersection by signal coordination. Through the results of existing data the intersections show the low performance by high numbers in average intersection delay and average no. of stops. But this performance will be expected to perform better by changing the approach width and the new cycle time which was calculated using IHCM as shown the results, coordinate between them, it gives the full performance. Keywords Signalized intersections, IHCM, Traffic delay, Optimize the Performance, cycle length and signal coordination.