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Incorporating road safety Into rural road network pavement management

journal contribution
posted on 2023-11-03, 05:03 authored by HR Pasindu, RKTK Ranawaka, RMK Sandamal, TWKIM Dias
Rural roads play an essential part in a country’s road network providing connectivity between the rural communities and the national roads. However, most of these roads are not maintained efficiently and safety issues are often not prioritised since pavement conditions are prioritised, especially in developing countries. Lack of reliable crash data, road condition monitoring regime are often cited as reasons. This study proposes a methodology to incorporate road safety performance in rural roads in maintenance planning using a multi-objective optimisation approach. Road safety performance is defined in terms of the Cumulative Safety Index (CSI), computed based on the severity, exposure, frequency of safety issues, identified in road safety audits. Safety performance and pavement condition-related indices such as International Roughness Index (IRI), pothole number, are included in the optimisation analysis. It comprises two objectives: minimise network IRI, and minimise network CSI. Applicability of the developed model has been demonstrated from the illustrative example of a rural road network. Results shows that roads with safety issues can also be prioritised in budget allocation while ensuring the network level pavement condition can be maintained at a reasonable level. This methodology offers a simplified approach to incorporate road safety issues in rural road PMS.

History

Journal

International Journal of Pavement Engineering

Volume

23

Pagination

4306-4319

Location

London, Eng.

ISSN

1029-8436

eISSN

1477-268X

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

12

Publisher

TAYLOR & FRANCIS LTD