Effects of geometric design features on truck crashes on limited-access highways.

Details

• Creators:
  Dissanayake, Sunanda ; Amarasingha, Niranga
• Corporate Creators:
  Mid-America Transportation Center
• Corporate Contributors:
  United States. Department of Transportation. Research and Innovative Technology Administration ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Geometric design
  • Expressways
  • Truck crashes
  • Trucks
  • Highway design
  • Highway safety
  • Roads--Kansas--Design and construction
  • Express highways
  • Geometrical constructions
  • Truck accidents
  More +
• Publication/ Report Number:
  MATC-KSU: 454
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final report.
• Corporate Publisher:
  Mid-America Transportation Center
• Abstract:
  Freight can be transported between most points in the country quite efficiently using trucks. However, involvement of large ; trucks in crashes can cause much damage and serious injuries, due to their large sizes and heavy weights. Large truck ; crashes occurring on limited-access highways may be more severe than crashes occurring on other roadways due to high ; speed limits, and traffic- and geometric-related characteristics. The purpose of this study is to describe the relationships ; between large truck crash probability, and traffic and geometric characteristics. Crash data from 2005 to 2010 were ; obtained from the Kansas Department of Transportation (KDOT), which included 5,378 large track crashes that occurred ; on Kansas limited-access highway sections. The traffic- and geometric-related details of highways were obtained from the ; Control Section Analysis System (CANSYS) database, which is maintained by KDOT as a highway inventory system. ; Homogeneous road sections in terms of speed limit, AADT, percent of trucks, horizontal curvature, horizontal grade, lane ; width, shoulder width, median width, and existence of rumble strips were identified. The total number of crashes occurring ; within each segment from 2005 to 2010 was determined, resulting in 7,273 analysis segments used in the modeling. A ; Poisson regression model and a negative binomial regression model were developed for identifying the relationships ; between the occurrence of truck crashes, and traffic and geometric characteristics. According to the models, highway ; design features such as horizontal curvature, vertical grade, lane width, and shoulder width are factors which can be used to ; change the occurrence of large truck crashes. Identifying the effect of traffic and geometric characteristics is important to ; promote safety treatments through engineering improvements.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25428/dot_25428_DS1.pdf
• File Type:
  [PDF - 1.30 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:da1cb0de0a26d113b720b293b72a2649fcd0621c7967f33531ab0af0447fa77c0ba46f5733454ebdd2117539e0d610319594e405d0cb9d5669d7818c7a1362e2