Developing Quantifiable Enforcement Countermeasures for Rural Highways

مرکز و کتابخانه مطالعات اسلامی به زبان های اروپایی

منو

" Developing Quantifiable Enforcement Countermeasures for Rural Highways "
Uddin, Muhammad Saif Abaza, Osama A.

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1104302
Doc. No	:	TLpq2216534477
Main Entry	:	Abaza, Osama A.
	:	Uddin, Muhammad Saif
Title & Author	:	Developing Quantifiable Enforcement Countermeasures for Rural Highways\ Uddin, Muhammad SaifAbaza, Osama A.
College	:	University of Alaska Anchorage
Date	:	2019
student score	:	2019
Degree	:	M.S.
Page No	:	71
Abstract	:	Highway police patrol can potentially reduce number of motor vehicle collisions in highway. The reduction in number of crashes may be achieved either regulating risky driving behaviors including speed monitoring or taking other measures that reduces crashes. Though it is obvious that presence of police in the highways help reducing crashes, the quantification of that reduction due to enforcement by highway patrolling remain unclear. Therefore, this research is an attempt to develop relationship between crash reduction and highway patrol hour spent by highway troopers in the highway. Besides, the default safety performance function given as a crash prediction model in the Highway Safety Manual does not address the highway police enforcement except a crash modification factor for overall enforcement. Little research has been done on the effects of troopers’ patrol hour on crash prediction models which is addressed in this study. Five major two-lane two-way highways were considered in this research and were divided into five-mile sections. Two and half years of highway troopers’ patrol hour and motor vehicle collisions data corresponding to each section were recorded and processed to establish relationship between reduced crashes and trooper patrol duration. It was found that there is a significant relation between patrol hours and reduction in crashes. The traffic volumes were then incorporated in each section of the highway and segmentation were carried out based on the similar annual average daily traffic to develop safety performance functions. Two different safety performance functions were developed one with patrol hours and another without to represent enforcement. The developed safety performance functions were compared each other and with Highway Safety Manual provided default safety performance function. The safety performance function developed considering highway patrol duration suggested that patrol hour has a significant effect on predicting crashes. It was also found that Highway Safety Manual provided safety performance function overestimates the crashes where the developed safety performance functions predict crashes more realistically.
Subject	:	Civil engineering