Vehicle accidents at maintenance and utility work zones.

Hargroves, Bradley T. · 1978 · ROSA P / Virginia Transportation Research Council

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 study by Bradley T. Hargroves addresses the magnitude and characteristics of motor vehicle accidents occurring in highway maintenance and utility (M/U) work zones. Motivated by growing safety concerns and a lack of specific data on these incidents, the research aimed to determine if such accidents were distinct from general traffic accidents and to assess the completeness of accident reporting. The study focused on Virginia’s state highway network, seeking to identify safety problems associated with moving traffic around work areas. The methodology involved three primary tasks. First, the author reviewed instructions and training materials given to Virginia State Police troopers regarding the use of the "Road Under Repair" designation on accident reports. A questionnaire was administered to 100 troopers to determine their interpretation of when to apply this designation. Second, the study analyzed 280 accident reports from a 14-month period (March 1977–April 1978) that were marked "Road Under Repair" but excluded construction projects. These accidents represented approximately 0.4% of all reported accidents. Third, the completeness of reporting was assessed by comparing designated accidents against known construction projects. The M/U accidents were compared against aggregate data for all 1977 rural accidents to identify trends. Key findings revealed significant inconsistencies in reporting. Trooper questionnaires indicated that officers applied a literal interpretation of "Road Under Repair," often failing to mark accidents caused by non-physical work activities (e.g., sweeping, landscaping) or those where the work zone was not the direct cause. Consequently, the sample likely underrepresented the true scope of work zone accidents. Analysis of the 280 included accidents showed they occurred most frequently in warmer months (May–October) and during mid-morning to mid-afternoon hours, correlating with peak work activity. Most accidents occurred on two-lane primary and secondary highways in open country areas. Environmental data indicated that 75% of accidents occurred during daylight, significantly higher than the 60% rate for general rural accidents, suggesting work zones are less active at night. Road surface conditions were predominantly dry, though slightly higher rates of muddy or oily surfaces were noted compared to general accidents. The study concludes that while M/U accidents share many characteristics with general rural accidents, they are distinct in their temporal distribution and location prevalence. The reliance on the "Road Under Repair" designation resulted in a sample that primarily captured accidents where physical roadway repair was the direct cause, excluding many other work-related incidents. The findings imply that current reporting procedures may not fully capture the safety risks associated with maintenance and utility work zones, particularly for activities not involving physical road repair. The author recommends future studies to better quantify these safety problems and improve data collection methods.

Key finding

Maintenance and utility work zone accidents accounted for approximately 0.4% of all reported accidents on the Virginia rural state highway system, with the majority occurring on two-lane roads during daylight hours in warmer months.

Methodology

dataset

Sample size: 280

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.

• work zones
• emergency work zone conspicuity
• incidence prevalence

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