01088615

Component

This study addressed the development of a sampling protocol for condition assessment of selected assets in the highway system in the state of Maryland. The proposed sampling protocol targets a desired precision and level of confidence in the estimates of levels of service (LOS) for individual assets at each maintenance shop. This work included the evaluation of the effect of sample size (i.e., number of ½- mile (0.8 km) roadway sections) on the accuracy of estimates of LOS. The distribution of sample sizes among the various maintenance shops accounts for factors such as roadway functional classification, average annual daily traffic (AADT), geographical location, the approximate distribution of assets in the system, and the variability in estimates of LOS for each individual asset in the system. Sensitivity studies were conducted to evaluate the effect of the aforementioned parameters on the required size and diversity of samples throughout the state of Maryland. The implementation of the proposed sampling protocol will allow maintenance personnel to make reasonable inferences regarding the condition level of the entire asset population. This information will be useful to prioritize areas of need and determine levels of funding, personnel, and equipment.

01084478

08-2093

English

21p

2008

Transportation Research Board 87th Annual Meeting

DVD

Figures (6) ; References (5) ; Tables (5)

Annual average daily traffic; Condition surveys; Highway maintenance; Level of service; Maintenance; Maintenance personnel

Sample sizes; Sampling protocols

Maryland

Highways; Maintenance and Preservation; I60: Maintenance

Transportation Research Board Annual Meeting 2008 Paper #08-2093

TRIS, TRB

Jan 29 2008 4:26PM