Synchronizing Roadway and Traffic Operations Influencing Bus Crashes

This paper evaluates roadway and operational factors considered to influence crashes involving buses. Factors evaluated included those considered to be related to bus sizes and service operations. Negative binomial (NB) and multinomial logit (MNL) models were used in linearizing and quantifying these factors with respect to crash frequency and injury severities respectively. The results showed that the position of the travel lane, presence or absence of on-street shoulder parking, posted speed limit, lane width, median width, number of lanes per direction and number of vehicles per lane have a higher influence on bus crashes compared to other roadway and traffic factors. Wider lanes and medians were found to reduce probability of bus crashes while more lanes and higher volume per lane were found to increase the likelihood of the occurrence of bus related crashes. Crashes involving buses was found to be higher for routes with higher posted speed limits excluding freeways compared to low speed limit roadways. Buses traveling on the inner lanes and making left turns were found to have higher probability of crashes compared to those traveling on the right most lanes. The same factors were found to influence injury severity though with varying magnitudes compared to crash frequency.


  • English

Media Info

  • Media Type: DVD
  • Features: References; Tables;
  • Pagination: 12p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01153435
  • Record Type: Publication
  • Report/Paper Numbers: 10-0527
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 10:16AM