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New Method for Distance-based Close Following Safety Indicator
Traffic Injury Prevention (2015)

Objective: The increase in the number of fatalities caused by road accidents involving heavy vehicles every year has raised the level of concern and awareness on road safety in developing countries like Malaysia. Changes in the vehicle dynamic characteristics such as gross vehicle weight, travel speed, and vehicle classification will affect a heavy vehicle's braking performance and its ability to stop safely in emergency situations. As such, the aim of this study is to establish a more realistic new distance-based safety indicator called the minimum safe distance gap (MSDG), which incorporates vehicle classification (VC), speed, and gross vehicle weight (GVW). Method: Commercial multibody dynamics simulation software was used to generate braking distance data for various heavy vehicle classes under various loads and speeds. Results: By applying nonlinear regression analysis to the simulation results, a mathematical expression of MSDG has been established. The results show that MSDG is dynamically changed according to GVW, VC, and speed. Conclusions: It is envisaged that this new distance-based safety indicator would provide a more realistic depiction of the real traffic situation for safety analysis. Link to Full-Text Articles :

  • vehicle type/classification,
  • distance-based safety indicator,
  • close following,
  • heavy vehicle,
  • gross vehicle weight (gvw),
  • conflicts
Publication Date
February 17, 2015
Publisher Statement
Ar1bc Times Cited:0 Cited References Count:17
Citation Information
"New Method for Distance-based Close Following Safety Indicator" Traffic Injury Prevention Vol. 16 Iss. 2 (2015)
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