Idaho Traffic Crashes, 2007

NHTSA · 2007 · ROSA P / Idaho. Office of Highway Operations and Safety

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Summary

**Idaho Traffic Crashes, 2007** is an annual statistical report produced by the Idaho Transportation Department’s Office of Highway Operations and Safety. The document aims to provide a comprehensive description of motor vehicle crash characteristics within the state to assist transportation, law enforcement, and health agencies in identifying traffic safety problems and targeting injury prevention programs. The report analyzes data to identify subgroups of drivers, pedestrians, vehicles, or roadways that exhibit statistically higher crash experiences than expected. The study utilizes data from the Idaho Transportation Department State Crash Database, which aggregates crash reports completed by all law enforcement agencies in Idaho using a standard form mandated by Idaho Code. The dataset includes crashes resulting in injury, death, or property damage exceeding $1,500 to any one person, a threshold raised from $750 in 2006. The analysis distinguishes between crash, vehicle, and person-level data, incorporating exposure metrics such as licensed drivers, registered vehicles, and annual vehicle miles traveled (AVMT). The report is organized around focus areas designated by the Idaho Traffic Safety Commission, including impaired driving, safety restraint usage, youthful drivers, aggressive driving, and vulnerable road users. In 2007, the total number of motor vehicle crashes increased by 9.2% to 26,452, while fatalities decreased by 6% to 252. The statewide fatality rate was 1.59 per 100 million AVMT, and the injury rate was 85.84. Impaired driving contributed to just over 40% of fatalities, with 93% of those killed in such crashes being the impaired driver, a passenger, or an impaired pedestrian. Aggressive driving was a factor in 54% of all crashes and 43% of fatalities. Youthful drivers (ages 15–19) were over-involved in crashes, experiencing fatal and injury crashes at 2.6 times the expected rate. Seat belt usage was observed at 78%, yet only 35% of occupants killed in crashes were restrained; the report estimates that universal seat belt use could have saved 57 lives. Single-vehicle crashes accounted for 61% of fatalities, with overturns being the leading harmful event. Rural roadways saw 78% of fatal crashes, contributing to Idaho’s fatality rate remaining higher than the national average. The estimated economic cost of crashes in 2007 exceeded $2.8 billion. The findings highlight critical areas for intervention, particularly regarding impaired driving, aggressive driving behaviors, and seat belt compliance. The report underscores the disproportionate risk associated with rural roadways and single-vehicle incidents, as well as the heightened vulnerability of youthful drivers. By quantifying the economic burden and identifying specific contributing circumstances, the document provides evidence-based guidance for developing targeted crash reduction strategies and allocating highway safety grant resources effectively.

Key finding

Idaho's 2007 fatality rate was 1.59 per 100 million vehicle miles traveled, with total crashes increasing by 9.2 percent while fatalities decreased by 6 percent.

Methodology

dataset

Provenance

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Topics

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• incidence prevalence
• fatality injury trends
• demographic disparities
• comparative international

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