<b>Study on </b><b>r</b><b>ing-road </b><b>i</b><b>ncident </b><b>d</b><b>uration </b><b>b</b><b>ased on </b><b>l</b><b>atent </b><b>c</b><b>lass</b><b>a</b><b>ccelerated </b><b>h</b><b>azard </b><b>m</b><b>odel</b>.csv

This study utilized incident data from a ring-road in Zhejiang Province in 2021, which was provided by relevant authorities. On-site incident response personnel recorded specific incident information. The studied section of the freeway underwent expansion and reconstruction in 2012, transitioning from a four-lane, two-way road to an eight-lane, two-way road. The dataset consisted of a substantial amount of real incident data that naturally occurred. The average duration of incidents in this dataset was 30.13 minutes, with a standard deviation of 38.55 minutes. The maximum incident duration recorded was 7 hours and 32 minutes, while the minimum was 1 minute. Moreover, 22 percent of the incidents resulted from vehicles colliding with fixed objects, while only 2 percent involved vehicle tipping over or catching fire. Additionally, 28 percent of the incidents transpired during the nighttime, and 34 percent of incidents involved individuals using mobile phone alarms. Approximately 40 percent of the incidents required the closure of the fourth lane, and 19 percent of incidents occurred during rainy weather.