DEVELOPMENT OF SAFETY PERFORMANCE MODEL FOR TOLL ROADS (CASE STUDY: TRANS-JAVA TOLL ROAD CORRIDORS CIKAMPEKâPALIMANAN AND KANCIâSEMARANG)
Road safety is an important aspect to be considered in road planning, especially for toll roads as paid roads, where road users have the right to get better safety, security, and comfort when driving on toll roads. During 2019-2020 there have been 1,291 single accidents on the Trans-Java toll roa...
Saved in:
| 主要作者: | |
|---|---|
| 格式: | Theses |
| 語言: | Indonesia |
| 在線閱讀: | https://digilib.itb.ac.id/gdl/view/66538 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Institut Teknologi Bandung |
| 語言: | Indonesia |
| 總結: | Road safety is an important aspect to be considered in road planning, especially
for toll roads as paid roads, where road users have the right to get better safety,
security, and comfort when driving on toll roads. During 2019-2020 there have
been 1,291 single accidents on the Trans-Java toll road sections, the Cikampek–
Palimanan and Kanci–Semarang toll roads, which caused quite a lot of fatalities
and injuries. Thus, serious efforts are needed to reduce the probability of crashes
and the crash severity, especially those related to single crashes as the dominant
crash type on the Trans-Java toll road.
This study aims to determine factors associated with the frequency of single crashes
and the severity of single crashes on toll roads. For this purpose, toll road safety
performance models, consisting of a single crash expectation model and a single
crash severity prediction model, were developed. The crash expectation model was
developed using the Negative Binomial regression model, with crash frequency as
the dependent variable and geometric and road environment factors as independent
variables. Meanwhile, a single crash severity model was developed using a
multinomial logistic regression model.
The results show that a higher single crash frequency is associated with higher
annual average daily traffic and the absence of a roadside safety barrier.
Meanwhile, the lower single crash frequency is associated with the maximum slope
value in the 1-km long segment before the road segment under review, the absence
of a median safety barrier, the presence of a flexible median safety barrier, and the
presence of a bridge pillar. For crash severity, the crash involving an overturned
vehicle and the presence of a flexible median safety barrier is associated with an
increased probability of fatal and injury crashes. Meanwhile, the presence of a
rigid median safety barrier is associated with a lower probability of fatal and injury
crashes. |
|---|