Details:

Creators:
Andreen, Burt ; Ksaibati, Khaled
Andreen, Burt ; Ksaibati, Khaled Less -
Corporate Creators:
University of Wyoming. Dept. of Civil and Architectural Engineering
Corporate Contributors:
United States. Federal Highway Administration
Subject/TRT Terms:
[+]
Accident Causes Accident Data Accident Severity Fatalities Highway Safety Logistic Regression Analysis Traffic Law Enforcement Trend (Statistics)
Publication/ Report Number:
FHWA-WY-12/03F
Resource Type:
Tech Report
Geographical Coverage:
Wyoming ; North Dakota
Wyoming ; North Dakota Less -
Corporate Publisher:
Wyoming. Dept. of Transportation
Abstract:
Safety Management Systems are federally mandated in an effort to encourage states to develop strategic programs in order to

mitigate severe crashes. In 2006, the Wyoming Department of Transportation (WYDOT) published the Wyoming Strategic Highway Safety

Plan (SHSP). The plan outlines goals for the state and transportation areas of strategic emphasis. While the SHSP has proven successful

in lowering crash rates, Wyoming is constantly plagued by one of the highest fatal crash rates in the region. In the northern Rocky Mountain

region, North Dakota historically boasts the lowest fatal crash rates, while Colorado has the highest. Other states in the region are

Wyoming, Montana, Utah, South Dakota, and Idaho. In an effort towards continued safety improvement, WYDOT is investigating whether

there is a link between certain factors in North Dakota and the low number of fatal crashes experienced there. The basis of this research

centers on evaluating key differences between North Dakota and Wyoming to determine if there are policies, practices, and or physical

differences that keep North Dakota’s fatal crash rate lower. This research investigates patrol enforcement differences, traffic safety laws,

crash records, mileage records, vehicle records, and economic factors as possible sources of crash rate differences. When some critical

factors were identified, Logistic Regression Modeling was applied to two Wyoming interstates to identify safety concerns for implementation

within Wyoming’s transportation SHSP. It was found that on Interstates 80 and 25 in Wyoming, sobriety, motorcycle usage, and speed

were some of the largest factors in increasing the probability of a critical crash. From comparing crash trends between the two states, it

was found that interstates are an area where fatal crashes happen more often in Wyoming. Wyoming also has more fatal crashes on

weekends and in the summer months than North Dakota. It was found that both states are behind in the adoption of nationally

recommended laws and that Wyoming enforcement needs more resources to effectively patrol and maintain safety on highways such as

interstate 80. Finally, it was determined that in those counties where mining and construction industries have high levels of employment,

crashes were more frequent and care should be taken to educate those communities on the benefits of safe driving.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:c747461770e3fa77e808b189c9a1a09bccd47680ae8e744d0ac9acc67e32ca9f
Download URL:
https://rosap.ntl.bts.gov/view/dot/27346/dot_27346_DS1.pdf
File Type:

Supporting Files

• No Additional Files

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