Safety evaluation of visual load at entrance and exit of extra-long expressway tunnel based on optimized support vector regression.

ABSTRACT: The traffic environment of an extra-long expressway tunnel is more complex than that of a long tunnel, which increases the driving risk. The visual load of drivers can be used to evaluate driving safety and comfort. To reveal drivers' visual load characteristics at the entrance and exit of extra-long tunnels on mountainous expressways, this study conducted vehicle tests with 12 drivers at Gonghe extra-long tunnel on the Yu-Xiang expressway in the Wulong District. An eye tracker, non-contact multifunctional velocimetry, illuminometer, and other test equipment were used to record drivers' pupil areas, velocity, and illuminance when entering and leaving the tunnel. The change characteristics of drivers' pupil areas were studied. The maximum transient velocity value (MTPA) of the pupil area wa

SUBMITTER: Shang T 

PROVIDER: S-EPMC9352028 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature