A rollover safety margin-based approach for quantifying the tractor-semitrailers' emergency lane-changing response on expressway curves.

ABSTRACT: In emergency scenarios, lane changing can provide a considerable advantage over braking by aiding in the prevention of rear-end collisions. However, executing lane changes on horizontal curves might lead to rollover collisions. This study proposes a systematic methodology for quantifying the rollover safety margin during lane-changing maneuvers by encompassing the complex characteristics of vehicle-road interactions. Specifically, an enhanced six-degree-of-freedom vehicle dynamics model was developed for a tractor-semitrailer and integrates road superelevation. Using this model, the rollover safety margin reduction rate (fS) was calculated. The fS represents the ratio of the difference between the lateral load transfer ratio margins under both reference state and emergency lane change cond

SUBMITTER: Lv W 

PROVIDER: S-EPMC10511121 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature