01046185

Component

Even though highway construction and maintenance (C/M) projects aim to improve transportation infrastructure and travel services, these highway C/M projects become one of the main reasons causing traffic congestion on existing road transportation systems as well as traffic accidents in work zone areas. The number of work zones is increasing due to the aging infrastructure, which demands spatial temporal coordination of these work zones for efficient use of the existing transportation network. Unlike other studies focused on single C/M project level, this study deals with network-wide impacts of multiple C/M projects. This problem is formulated as bi-objective multi-period transportation network optimization problem to seek an optimal schedule that coordinates multiple C/M projects. The objectives are to minimize the total system cost and to maintain minimum travel services between origins and destinations. A bi-objective genetic algorithm is employed to solve the multi-period network optimization problem. A numerical example shows that the optimal coordination saves more than 50% of waste in system costs, compared to the worse case scenario.

01042056

07-1105

English

18p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures; Maps; References (13) ; Tables (2)

Construction and maintenance; Genetic algorithms; Infrastructure; Maintenance practices; Networks; Optimization; Origin and destination; Road construction; Traffic crashes; Work zones

Aging infrastructure; Total system cost; Transportation infrastructure

Construction; Highways; Maintenance and Preservation; I50: Construction and Supervision of Construction; I60: Maintenance

Transportation Research Board Annual Meeting 2007 Paper #07-1105

TRIS, TRB

Feb 8 2007 5:43PM