Bicycle Safety Highway Users Information Report

Burgess, Bruce, 1943-; Burden, Dan. · 1978 · ROSA P / United States. National Highway Traffic Safety Administration

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 1978 report, sponsored by the National Highway Traffic Safety Administration (NHTSA) and authored by Bruce Burgess and Dan Burden of Bikecentennial, Inc., addresses the lack of comprehensive data regarding bicycle accidents on shared highways. Motivated by an estimated 500,000 to 1,000,000 annual bicycle accidents in the United States, the study aims to establish accurate accident base rates, identify primary causes, and differentiate the behaviors of accident-prone versus safe riders. The research focuses on adult bicyclists using lightly traveled highways, seeking to inform future facility design, education programs, and enforcement strategies. The methodology relies on data collected during the summer of 1976 from 4,065 cyclists participating in the Bikecentennial event, a cross-country inauguration of the TransAmerica Bicycle Trail. These riders traveled 10.4 million miles across ten states on Class III (shared highway) routes. The study utilized stringent record-keeping of all accidents, rider profiles, and roadway conditions. By comparing accident riders with a control group of non-accident riders, the authors analyzed variables such as age, experience, equipment, riding technique, and adherence to traffic laws. The scope was limited to shared highway use with average daily traffic counts between 200 and 1,000, excluding urban commuting contexts. Key findings indicate that effective route design significantly reduces accident rates; riders on the designated TransAmerica Trail experienced 80 accidents per million miles, compared to a baseline of 113 per million miles in other studies, with rates doubling or quadrupling when riding off-trail. The study established distinct rider profiles: accident riders were predominantly aged 16–20, rode alone, lacked specific hazard-handling plans, and were less likely to obey traffic regulations or wear bright clothing. In contrast, non-accident riders were older, married, and adhered to strict safety checks and riding techniques. Motor vehicles were involved in only 17.5% of accidents, while the most frequent cause was bicyclists colliding with other bicyclists (20.1%). Roadway conditions, such as potholes and loose gravel, contributed to 27% of accidents, with downhills identified as high-risk zones for severe injuries. Additionally, carrying equipment on the bicycle tripled the accident rate compared to having gear transported separately, and fatigue significantly increased accident likelihood after 70 miles of riding. The report concludes that bicycling safety is a systemic issue requiring coordinated improvements in infrastructure, education, and law enforcement. It suggests that accidents could be reduced by up to 50% through the selection of preferred bicycle corridors, improved roadway maintenance, and standardized national laws. The authors emphasize the need for targeted education, particularly for young riders, and the adoption of defensive riding techniques. Furthermore, the study highlights the underreporting of accidents, with only 10% reported to law enforcement, and calls for better judicial support for traffic law compliance to enhance overall shared highway safety.

Key finding

Bicyclists riding along the TransAmerica Bicycle Trail experienced only 50-75% of the accidents anticipated based on exposure miles, with an average rate of 80 accidents per million miles compared to a base rate of 113 per million miles for proficient adult bicyclists.

Methodology

naturalistic

Sample size: 4065

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.

• cyclist safety