A Freeway Travel Time Reliability Study
نویسندگان
چکیده
The objective of this study was to identify measures appropriate to estimate travel time reliability and apply them to study the reliability of travel time under varying freeway operating conditions. More specifically, a case study was undertaken to study travel time reliability along the I-65 corridor in the State of Alabama. The objectives of this study were to: a) Calculate reliability metrics using travel time data collected from INRIX for a study corridor, b) Investigate effects of traffic incidents on travel time reliability, and c) Validate the planning time index (PTI) model proposed by SHRP2 L03 project using field data from the study corridor. The findings from the study are expected to advance the understanding of travel time variability under incident and non-incident conditions and assist authorities and transportation agencies in their efforts to improve the planning, design, and operation of transportation facilities. Keywords—Travel time reliability, freeway, non-incident, incident, planning time index, Birmingham, Alabama
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