01620104

Component

https://doi.org/10.3141/2639-02

Pavement surface–tire friction is a critical safety element associated with roadway design, construction, and maintenance practices. The skid resistance of pavements generally declines over time and increases the risk of skidding-related crashes. On horizontal curves, lateral friction may be associated with lane-departure incidents, particularly as the pavement ages and drivers demand more lateral friction than the pavement surface–tire interaction can supply. On tangent roadway sections, longitudinal friction affects braking distances. As the skid-resistance properties of a pavement surface decline over time, braking distances increase, and may increase risks to driver safety. A comprehensive understanding of the process of pavement friction degradation could help highway agencies identify roadway segments that need maintenance to reduce the probability of skid-related incidents. This paper presents a survival analysis of friction degradation for asphalt pavement surfaces. Duration models were estimated with data collected annually along an Interstate highway in Pennsylvania to investigate the degradation of friction over time. These models consider traffic volume and roadway features to determine the probability that friction levels will remain above various friction thresholds. The resulting statistical models can help transportation agencies make better decisions about pavement maintenance to reduce safety risk.

01632579

17-01864

English

pp 11–19

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441636

Digital/other

Figures (3) ; References (30) ; Tables (4)

Asphalt pavements; Field tests; Geometric design; Pavement maintenance; Rolling friction; Skid resistance; Traffic volume

Pennsylvania

Highways; Maintenance and Preservation; Pavements

TRIS, TRB, ATRI

Dec 8 2016 10:39AM

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