ASSESSING MEASURES OF HIGHWAY TRAFFIC FLOW WITH TRAVEL TIME RELIABILITY BASED ON TRAVEL TIME INDEX. In-depth literature reviewed.
Viewing cities in this contemporary era, travel time efficiency and operational performance as well as the service quality of transport connectivity posed a strong effect on transportation networks. However, severe and unanticipated delays disrupted deliveries, program and activity schedules, operations, and other logistics. The travel time index was used to identify the determinants of the buffer time index (BTI) and planning time index (PTI) as a technique for measuring travel time consistency. This study aimed to examine highway travel time reliability measures based on BTI and PTI using a highway capacity manual (HCM) as an integral part of this work. The study focuses on the following objectives. Firstly, to identify the measures of highway travel time reliability. Secondly, to assess the effectiveness of travel time reliability measures. The researchers developed a bibliometric analysis to identify the intensity of the two variables used based on the literature. The study further provides an explanatory framework for travel time reliability through wide and broader learning under diverse works of literature. The study shows that BTI was more consistent and proven more effective in measuring TTI compared to PTI with minimum percentile. The study’s findings will be useful to transportation planners, academics, and traffic engineers in their decision-making process to improve TTR.
Keywords: Highway traffic flow, Travel time, Reliability, Buffer time index, Planning time index.