1999 Pennsylvania Crash Facts and Statistics

NHTSA · 1999 · ROSA P / Pennsylvania. Dept. of Transportation

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Summary

The 1999 Pennsylvania Crash Facts and Statistics report, published by the Pennsylvania Department of Transportation, provides a comprehensive statistical review of reportable motor vehicle crashes in Pennsylvania for the calendar year 1999. The data is compiled from traffic crash reports submitted by state, county, municipal, and other law enforcement agencies. The report aims to document the frequency, severity, and characteristics of traffic incidents to inform highway safety efforts. The study analyzes 144,171 reportable crashes, defined as incidents resulting in death, injury, or vehicle damage requiring towing. The report categorizes data by injury severity, crash type, vehicle involvement, driver demographics, environmental conditions, and geographic location. It includes five-year trend analyses for various metrics, such as total crashes, deaths, and specific crash types like alcohol-related or work zone incidents. Definitions are strictly applied, such as classifying "alcohol-related" crashes as any incident involving a drinking driver or pedestrian, and "speed-related" crashes as those where speed was a contributing factor. In 1999, crashes claimed 1,549 lives and injured 133,783 people. The fatality rate was 1.54 deaths per 100 million vehicle-miles of travel, the third lowest recorded in Pennsylvania history. Passenger cars were involved in the majority of crashes (65.1%), followed by light trucks (26.1%). Male drivers aged 16–20 were involved in more crashes than any other demographic group. Adverse weather and road conditions accounted for a minority of crashes; 78.8% occurred under no adverse weather conditions, and 72.6% on dry roads. However, crashes involving vehicle defects were primarily caused by engine failure (37.9%) and tire/wheel issues (30.8%). Work zone crashes totaled 2,184, with 58.3% resulting in injuries. Alcohol-related crashes resulted in 528 deaths, while speed-related crashes caused 202 fatalities. The report highlights significant economic losses, estimating the total cost of traffic crashes at $12.26 billion, or approximately $1,022 per Pennsylvania resident. It notes that while total crashes increased by 2.3% compared to 1998, alcohol-related deaths decreased by 1.3%. The data reveals that Friday and Saturday saw the highest number of crashes and deaths, with Saturday accounting for 19.7% of fatalities. The report serves as a critical resource for understanding traffic safety trends, identifying high-risk behaviors and conditions, and guiding policy interventions in Pennsylvania.

Key finding

In 1999, Pennsylvania recorded 144,171 reportable traffic crashes resulting in 1,549 deaths and 133,783 injuries, with male drivers aged 16-20 involved in the highest volume of crashes.

Methodology

dataset

Sample size: 144171

Provenance

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Topics

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• incidence prevalence
• demographic disparities
• fatality injury trends
• comparative international
• vru crash typology

Information type

What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).

• Empirical Findings: crash risk outcomes, observational prevalence