Demand Responsive Approach to Highway Maintenance and Rehabilitation. Volume 1. Development of Concepts and Examples

摘要

The report describes the development of demand responsive concepts for maintenance planning and policy formulation. Analytical components of the demand-responsive approach include (1) numerical measures of maintenance levels of service, or quality standards; (2) quantitative models to predict the condition or deterioration of specific road features as a function of the relevant physical, environmental and traffic factors; and (3) quantitative models to assess the impacts of maintenance performance, as for example in the areas of preservation of investment, user consequences, and accident frequency. These concepts are applied to various highway maintenance activities to illustrate the development of condition and impact models, and how they may be used in conjunction with quality standards to evaluate maintenance policy.