VI. RESEARCH WORK DONE IN ACADEMIC INSTITUTIONS RELATED TO THESIS WORK

D. TRAFFIC AND TRANSPORTATION
11. Optimizing Generalized Cost of Travel: An Approach for Improvement Planning of Rural Bus Service
Date of Start

May 2005
Indian Institute of Technology, Kharagpur (R)

 

Scope and Objectives

Broad objective is to formulate a rational methodology for judicious improvement planning of rural bus service. A rural bus route in West Bengal presently served by all-stop service is considered as the case study. Introducing an express bus service to serve major stops along the study corridor is considered as an improvement. An attempt is made to identify suitable service attributes for express and all-stop service for maximizing user benefits subject to the operational viability of both services

 
Methodology
User benefit is defined in terms of savings in generalized cost (GC) of travel. For the development of GC function, valuing of relevant attributes is done. The GC includes direct cost of travel, cost of service headway, cost of in vehicle travel time and cost of discomfort. Suitable service attributes for both services are identified by solving a constrained optimization problem. A Genetic Algorithm based approach is used for obtaining the solution assuming uniform headways for both services. Subsequently, a simulation model is developed to account for the non-uniform headways at different stops along the route.
 
Findings and Conclusions
User benefits and operational viability are the two major aspects highlighted in the work for improvement planning of rural bus service. User benefit is measured in terms of savings in generalized cost (GC) of travel, where GC is a comprehensive measure accounting for various disutilities of travel by commuters. Application of Genetic algorithm and simulation technique is demonstrated for identifying suitable service attributes which will maximize user benefits but ensure operational viability of both services.