Highway Research Record

Accident Analysis Involving Metropolitan Transport Corporation Buses

Date of Start:July 2004
Division of Urban Systems Development, College of Engineering, Anna University, Chennai (R, I)

Scope and Objective
(i) To identify the Accident prone locations
(ii) To find the type and causes of accidents involving Metropolitan Transport Corporation buses and other road users.
(iii) To suggest road improvement measures

(i) Identification of accident prone locations using Frequency Method and Accident Possibility Index method.
(ii) Analysis of Metropolitan Transport Corporation bus accident data to find the characteristics and nature of accidents which      occur at various locations and with various road users.
(iii) Location wise analysis of the accident data to get insight into the occurrence of accident at that particular location. Analysis      of locational accidents based on classification of the identified locations on the existing land use.
(iv) Locational improvements based on observational survey and traffic survey conducted for the selected locations.
(v) Comparison of regional and city accidents to formulate the difference in the nature of accidents involving Metropolitan      Transport Corporation buses at regional and city level.

Findings and Conclusions
(i) The analysis showed that the accidents, though of lesser severity, are more in occurrence during the peak hours.
(ii) Basically vehicles such as car and lorry constitute the larger percentage of accidents with Metropolitan Transport Corporation      buses and about 41% of the overall lorry accidents which occur in Chennai are with Metropolitan Transport Corporation      buses.
(iii) The locational analysis showed that the recreational areas witnessed an increased involvement of car and two wheeler       accidents, commercial areas that of car and Lorries and institutional/official areas that of cars.
(iv) The regional and city accident comparison highlighted that the accidents are more in the city but with slower moving       vehicles whereas in the regional areas it is with faster modes of transport.
(v) The locational improvements, to mitigate the occurrence of accidents at the location, have been proposed based on the      geometric and traffic conditions at the spot.
(vi) The realigned geometrics and traffic conditions proposed for the locations have been given in a scaled diagrammatic       format.