Idaho Traffic Collisions, 2003

NHTSA · 2003 · ROSA P / Idaho. Office of Highway Safety

archive: archived pipeline: cataloged verified

Get this paper ↗ (full text — opens at the source; we link to it, we don't host it)

Summary

This report, titled *Idaho Traffic Collisions, 2003*, provides a comprehensive statistical analysis of motor vehicle collisions in Idaho for the year 2003. Published by the Idaho Transportation Department’s Office of Highway Safety, the document aims to assist state and local agencies in identifying traffic safety problems and targeting collision reduction programs. The data is derived from the Idaho Transportation Department State Collision Database, which aggregates reports from all law enforcement agencies in the state. The report includes only collisions investigated by law enforcement that resulted in injury, death, or property damage exceeding $750, excluding incidents on private property. The study analyzes statewide trends, demographic factors, roadway classifications, and specific safety focus areas such as impaired driving, safety restraint usage, and aggressive driving. Data is categorized by collision severity (fatal, serious injury, visible injury, possible injury, and property damage) and compared against exposure measures including population, licensed drivers, registered vehicles, and Annual Vehicle Miles of Travel (AVMT). The report also breaks down data by month, day of the week, time of day, and specific counties and cities to identify high-risk areas and times. In 2003, Idaho recorded 26,700 total collisions, a 0.8% increase from 2002. Fatal collisions increased significantly by 13.5% to 261, resulting in 293 fatalities, an 11.0% rise from the previous year. Conversely, injury collisions decreased slightly by 1.1% to 9,661, with 14,601 persons injured. The statewide fatality rate rose to 2.03 per 100 million AVMT, while the injury rate decreased to 101.39. Rural roadways accounted for 84% of fatal collisions, despite comprising 91% of the state's road mileage, highlighting the higher risk associated with rural driving conditions. Single-vehicle collisions, though representing only 32% of all crashes, accounted for 57% of fatalities, with overturns being the leading harmful event in these incidents. The estimated economic cost of collisions in Idaho for 2003 was approximately $1.7 billion, an increase of $87 million from 2002. Fatalities constituted the largest cost component at nearly $917 million. Contributing circumstances varied by collision type; speed was the primary factor in single-vehicle collisions (33%), while inattention/distraction was most prevalent in multiple-vehicle collisions (25%). The report notes that society bears nearly 75% of crash costs through insurance premiums, taxes, and medical charges. These findings underscore the disproportionate impact of rural and single-vehicle crashes on fatalities and the significant economic burden traffic collisions place on the state.

Key finding

Single-vehicle collisions accounted for 32% of all collisions but were responsible for 57% of all fatal collisions in Idaho during 2003.

Methodology

dataset

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).

Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• 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