Aftermarket Cameras in Winter Maintenance Vehicles

Gallagher, Mark; Curd, Chris · 2021 · ROSA P / Minnesota. Department of Transportation. Clear Roads Pooled Fund

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Summary

This study, conducted by SRF Consulting Group for the Clear Roads Pooled Fund, investigates the implementation, utility, and best practices of aftermarket video camera systems on winter maintenance vehicles. The research aims to help transportation agencies maximize the operational benefits of these systems, which enhance situational awareness and assist with operational decisions. The project employed a mixed-methods approach, including a state-of-the-practice literature review, a survey of 29 agencies across 25 states, follow-up interviews with three agencies and two manufacturers, and an analysis of a pilot deployment. The survey revealed that approximately two-thirds of responding agencies utilize camera systems, with the most common applications being rear-view monitoring, spreader verification, and wing plow observation. While forward-facing "plow cams" are used for public information and internal safety records, the primary driver for adoption is operator assistance. Key selection criteria for agencies were camera durability and image quality, with system cost being a secondary factor. Maintenance costs were generally low, with most agencies reporting annual per-vehicle costs under $200. However, the most frequent operational issue cited was degraded video quality due to dirt, snow, and moisture accumulation on lenses, particularly for spreader and rear-view cameras. Interviews highlighted that while drivers initially expressed privacy concerns, acceptance increased as they recognized the operational value, such as the ability to monitor material spreaders without exiting the vehicle. The study identified several critical best practices for successful deployment. Cameras must be equipped with washer systems and heated lenses to maintain image clarity in harsh conditions; the research noted that low-cost cameras can be effectively paired with commercial wash systems. In-cab displays should be positioned to avoid windshield glare and include driver-adjustable brightness controls. The report advises against integrating forward-facing camera video into in-cab displays to prevent distraction. Furthermore, live video transmission via cellular networks is generally not recommended due to poor performance outside urban areas, though it may be viable in areas with high-density 5G coverage. The authors also emphasize the importance of involving operators in the planning and installation process to ensure system acceptance and utility. Finally, the study suggests using Power-over-Ethernet (POE) cameras to simplify wiring and warns against proprietary software that creates vendor lock-in.

Key finding

The most common operational issue with aftermarket cameras on winter maintenance vehicles is degraded video quality due to dirt and moisture accumulation, necessitating the use of washer systems and heated lenses.

Methodology

mixed_methods

Sample size: 29

Provenance

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

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• automated enforcement cameras