Highway Research Record

Highway Safety Audit: A case study for Chennai Bypass

Duration: January 2004 to June 2004
School of Planning and Architecture, New Delhi (R)

Scope and Objective
The research work aims at the improvement of safety of highways through safety audits.
(i) To understand and appreciate the concept of road safety audit, its elements and application.
(ii) To study the highway safety audit and scenario in India.
(iii) To evolve a highway safety audit checklist for Indian conditions.
(iv) To understand the casual factors for accidents using the designed checklist and to suggest the preventive measures.
(v) To evolve a methodology for carrying out highway safety audits in India.

The thorough study of past experiences from national as well as international reviews was undertaken. Existing national and international legislations are to be studied. General checklist is to be prepared for road safety audit. Design process and guidelines to be framed out. Selection of design and consultants were evaluated. The procedural and implementation weakness were eliminated. Evolution of Highway Safety Audit Procedure was done on the basis of study undertaken.

Findings and Conclusions
(i) Data is needed to be collected and analyzed accordingly for highway safety audit in India: Road Inventory data, Landuse and     Demographic data, 24hr classified volume count, Pedestrian movement count, Origin destination survey, Spot speed survey,     Accidents data analysis and Checklist.
(ii) Customized checklist to be used for Safety Audit of India Highways as general Road Safety Audit checklist has many items      which are irrelevant in highways in general and India in specific.
(iii) Planning aspects needs to be taken into account for planning and safety auditing of an existing highway: Severance, Fast      and slow traffic to be segregated, Local and through traffic should be segregated, Restrict the parking along the highway,     Transverable slopes to be incorporated in design stages, Adequate illumination to be provided at intersections and areas     along urban stretches, Highway patrolling and maintenance to be made effective and all illegal accesses to be closed,      Roadside amenities should be provided on highways.
(iv) RECOMMENDED METHODOLOGY: Collection of background information. Commencement meeting with client/designer.       Getting the Traffic data and accident analysis. Assessment of documents using checklist. Inspecting the site. Write the       audit report. Implement the HAS recommendations. Site reconnaissance.

Ashish Chadha, “Highway Safety Audit- Case Study Chennai Bypass”, Master’s Thesis (unpublished), Department of Transport Planning, School of Planning and Architecture, New Delhi, 2004