TY - JOUR
T1 - Safety-oriented pavement performance thresholds
T2 - Accounting for unobserved heterogeneity in a multi-objective optimization and goal programming approach
AU - Anastasopoulos, Panagiotis Ch
AU - Sarwar, Md Tawfiq
AU - Shankar, Venky N.
N1 - Publisher Copyright:
© 2016
PY - 2016/12/1
Y1 - 2016/12/1
N2 - The cornerstone of transportation infrastructure asset management is managing the physical infrastructure, with pavement preservation being one of the most critical and costly assets. Preserving pavements in an appropriate manner extends their service life, and most importantly improves motorists’ safety and satisfaction while saving public tax dollars. To that end, this paper presents a methodology to estimate pavement performance thresholds that are cost-effective and safe for users. Using data from Indiana, the relationships of the three criteria, i.e., safety (accident rates), normalized treatment cost and pavement service life, with the pavement performance (roughness, rutting, overall rating, and surface deflection), road geometry, traffic characteristics and climate - are investigated and estimated. These relationships are utilized in a multi-objective optimization and goal-programming scheme to identify performance threshold values that trigger preservation treatments. These analytically determined threshold values are found to be comparable to historical thresholds and thresholds derived from experts’ and users’ opinions.
AB - The cornerstone of transportation infrastructure asset management is managing the physical infrastructure, with pavement preservation being one of the most critical and costly assets. Preserving pavements in an appropriate manner extends their service life, and most importantly improves motorists’ safety and satisfaction while saving public tax dollars. To that end, this paper presents a methodology to estimate pavement performance thresholds that are cost-effective and safe for users. Using data from Indiana, the relationships of the three criteria, i.e., safety (accident rates), normalized treatment cost and pavement service life, with the pavement performance (roughness, rutting, overall rating, and surface deflection), road geometry, traffic characteristics and climate - are investigated and estimated. These relationships are utilized in a multi-objective optimization and goal-programming scheme to identify performance threshold values that trigger preservation treatments. These analytically determined threshold values are found to be comparable to historical thresholds and thresholds derived from experts’ and users’ opinions.
KW - Goal programming
KW - Hazard-based duration modeling
KW - International roughness index
KW - Multi-objective optimization
KW - Pavement performance thresholds
KW - Pavement preservation
KW - Pavement service life
KW - Random parameters
KW - Rutting
KW - Surface deflection
KW - Tobit regression
KW - Unobserved heterogeneity
UR - http://www.scopus.com/inward/record.url?scp=84993969562&partnerID=8YFLogxK
U2 - 10.1016/j.amar.2016.10.001
DO - 10.1016/j.amar.2016.10.001
M3 - Article
AN - SCOPUS:84993969562
SN - 2213-6657
VL - 12
SP - 35
EP - 47
JO - Analytic Methods in Accident Research
JF - Analytic Methods in Accident Research
ER -