Idaho traffic collisions, 2006

NHTSA · 2006 · ROSA P / Idaho. Office of Highway Operations and Safety

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Summary

This report, published by the Idaho Transportation Department’s Office of Highway Operations and Safety, provides a comprehensive statistical analysis of motor vehicle collisions in Idaho for the year 2006. The document serves as a resource for state and local agencies to identify traffic safety problems and target areas for collision reduction and injury prevention programs. The data is derived from the Idaho Transportation Department State Collision Database, which aggregates collision reports completed by all law enforcement agencies in the state. The report notes that the total number of reported collisions decreased by 14.2% to 24,225 in 2006, a decline attributed primarily to a legislative change that raised the property damage reporting threshold from $750 to $1,500. The analysis covers statewide collision categories, fatality and injury rates, economic costs, and specific problem areas such as impaired driving, aggressive driving, and youthful drivers. Key findings indicate that Idaho’s fatality rate was 1.75 per 100 million vehicle miles traveled, significantly higher than the national rate of 1.44. There were 267 fatalities and 13,950 injuries in 2006. The estimated economic cost of these collisions was nearly $1.8 billion. Impaired driving was a major factor, contributing to just over 41% of motor vehicle fatalities. Aggressive driving was cited as a contributing factor in 43% of fatalities and 54% of all collisions. Single-vehicle collisions, while less frequent, were 2.8 times more likely to result in a fatality than multiple-vehicle collisions, with overturns being the leading harmful event in fatal single-vehicle crashes. The report highlights specific demographic and behavioral trends. Drivers aged 15 to 19 were over-involved in crashes, experiencing fatal and injury collisions at rates 2.6 and 2.9 times higher, respectively, than expected. Observed seat belt usage reached an all-time high of 80%, yet only 39% of occupants killed in collisions were wearing seat belts; the report estimates that 58 lives could have been saved if all occupants had been restrained. Rural roadways accounted for 74% of fatal collisions, a disparity linked to higher speed limits and the fact that 90% of Idaho’s road mileage is rural. Additionally, motorcyclist fatalities continued to rise, with 38 motorcyclists killed in 2006. The report concludes by providing detailed breakdowns by county, city, time of day, and roadway classification to assist in targeted safety interventions.

Key finding

Idaho's 2006 fatality rate was 1.75 per 100 million vehicle miles traveled, which remained significantly higher than the national rate of 1.44, while the total number of collisions dropped 14.2 percent primarily due to an increased property damage reporting threshold.

Methodology

dataset

Provenance

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Topics

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• incidence prevalence
• fatality injury trends
• demographic disparities

Information type

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• Empirical Findings: crash risk outcomes, observational prevalence