The Impact of Road Gradient and Truck Composition on the Toll Road Traffic Performance

Abstract

Jakarta Outer Ring Road (JORR) is a toll road system that circles the outskirts of Jakarta, where the purpose of this road is to reduce congestion on the streets in Jakarta city centre. However, the high composition of trucks in JORR resulted in congestion of the road, which is hypothesized as attributed by the gradient of this road. This study aims to evaluate the impact of road gradient on truck and the overall traffic performance. Using data obtained from 24-hour traffic recording on selected JORR section, a VISSIM model was constructed to simulate traffic performance on some combinations of traffic and gradient conditions. In terms of macroscopic view point of traffic stream, the simulations showed that road gradient alone insignificantly affected truck speed, as well as the overall traffic speed. Instead, truck composition had more effect on the traffic speed rather than the gradient. In a particular composition of trucks different gradients did not significantly affect traffic speed differently. This implies that any policy to restrict truck access to toll road should depend mainly on the composition of truck itself, not the gradient of the road.

Consumer Confidence Investigation Jorr Toll Service Quality

“…For example, it is more difficult to agree on the quality of a haircut than the quality of a hairdryer. Customer retention may be a measure of the best qualitythe ability of service companiesto hold on to customers depends on how consistentlythey deliver value, (Yusuf & Sudrajat, 2018) Service quality is a function of the size and direction of the gap between customer expectations for service and customer assessment (perception) of the service actuallydelivered, Schiffman & Winblit (2015:h.139) The SERVQUAL scale measures the "gap" between customers' expectations of the services they have purchased and their perception of the services they have actuallyreceived, Schiffman & Winblit (2015:h.140)…”