Estimating the Influence of Different Lane Arrangements on Safety of Inter-Tunnel Weaving Section

The primary objective of this study is to evaluate the effects of lane arrangements on the safety performance of inter-tunnel weaving section. Field data were collected at twelve sites in Nanjing, China. Conflict prediction models were developed to relate the number of conflicts to influencing variables, which include traffic data and geometric characteristics. Generalized linear model was applied when developing conflict prediction models and the coefficients of independent variables were estimated by Bayesian method. The model results show that type 2 inter-tunnel weaving section reported the lowest conflict frequency. There is a reservation between the main and branch road and an auxiliary lane of the main road in this kind of weaving area. The road markings over the whole section are single dashed lines. For type 1 inter-tunnel weaving section, the leaving section had the largest number of conflicts while the middle section had the least conflicts. The model results also indicate that the number of lanes on branch road of type 1 inter-tunnel weaving section is not an influencing factor of conflict occurrence. The lengths of sub-sections and the whole segment had a complex effect on the conflict, as the impacts of the ratio of partitioned length to the total length on conflicts were not coordinated with that when considering the length of a section alone.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee ABR10 Standing Committee on Critical Transportation Infrastructure Protection.
  • Corporate Authors:

    Transportation Research Board

  • Authors:
    • Ouyang, Pengying
    • Bai, Lu
    • Wu, Jiaming
    • Liu, Pan
    • Xu, Chengcheng
  • Conference:
  • Date: 2019


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 8p

Subject/Index Terms

Filing Info

  • Accession Number: 01697961
  • Record Type: Publication
  • Report/Paper Numbers: 19-05456
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:42AM