Relationship of Lane Width to Speed for Urban Expressway: A Case Study in Shanghai

Abstract

Abstract. In order to mitigate traffic congestions caused by the rapidly increased private car ownership in Shanghai, the transportation agencies implemented several strategies, such as narrowed the lane width to create additional lanes. To investigate the relationship of the lane width to speed, two month of traffic data are collected from 36 sites in the management system of Shanghai expressways. The ANOVA analysis and regression analysis are used to evaluate the effect of average lane width on speed at different levels of service (LOS).

Operating Vehicles’ Speed Prediction Models

“…Also, on the extra-urban tangents, it was shown that the pavement width proportionally affects the operating speed. Contrary to research [75][76][77], Fitzpatrick et al (2005) [34] did not find a statistically significant relationship between operating speed and road lane width. Maji et al ( 2020) [46] conducted research at 251 locations in Oklahoma and created three operating speed prediction models for roads with a higher speed limit (80-105 km/h), for roads with a lower speed limit (56-72 km/h) and for roads with various speed limits, the last of which proved to be the most accurate.…”