Evaluation of the Nevada DOT Rest Area System: Recommendations to Reduce Gaps in Traveler Services

Gates, Timothy J.; Kay, Jonathan; Savolainen, Peter T. · 2022 · ROSA P / Nevada Department of Transportation

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Summary

This study evaluates the Nevada Department of Transportation (NDOT) rest area system to identify service gaps and safety hazards, providing data-driven recommendations for facility maintenance, improvement, relocation, or closure. The research was motivated by the aging infrastructure of NDOT’s 33 rest areas, many of which exceed their design life, and the rapid expansion of private commercial facilities that now offer comparable services. The primary objectives were to benchmark the safety performance of the highway network, quantify the impact of rest areas on fatigue-related crashes, and prioritize modifications based on economic viability. The methodology involved a comprehensive literature review and the collection of spatial and operational data, including NDOT rest area characteristics, roadway inventory, traffic volumes, historical crash data (2015–2017), and the location of private facilities offering similar services. Researchers analyzed these datasets to identify areas with unmet traveler needs by mapping the distance to the nearest facility with public parking or restrooms. To assess safety impacts, the study employed Negative Binomial models to estimate fatigue-related target crash risks along study routes, correlating crash frequency with distance from rest areas. Economic analysis was conducted by computing benefit/cost (B/C) ratios for proposed modifications. Benefits included estimated crash cost savings and the value of traveler services, while costs accounted for construction and annualized maintenance over a 40-year service life. Only proposals with a B/C ratio greater than 1.0 were recommended. The findings identified specific areas of unmet need and safety hazards, leading to a prioritized list of recommendations. The study recommended adding vault toilets to five basic rest stops: Mountain House, Pahranagat, Crystal Springs, Bean Flat, and Pony Springs. It also advised relocating five facilities to eliminate safety hazards or fill service gaps, including moving Pahranagat and Salmon Falls Rest Stops along US-93, Crystal Springs away from a curve, Hawthorne Rest Area along US-95, and Eureka Rest Stop along US-50. Additionally, the report recommended constructing six new basic rest stops or rest areas at specific locations along US-95, US-93, US-6, US-50, and NV-225 to address service gaps. Finally, the Log Cabin Rest Area was recommended for closure due to its end-of-service life, lack of truck parking, and proximity to abundant private services. The significance of this research lies in its provision of a structured, economic framework for managing public rest area systems in the context of competing private facilities. By linking facility placement to quantifiable safety benefits and traveler convenience, the study offers NDOT a decision-support tool for optimizing limited resources. The recommendations aim to reduce fatigue-related crashes and improve service equity across the highway network, ensuring that public facilities remain viable and safe while acknowledging the role of private sector alternatives.

Key finding

The study developed a prioritized list of modifications to the Nevada DOT rest area system, including adding vault toilets, relocating existing facilities, and constructing new stops, all selected for having benefit-cost ratios greater than 1.0.

Methodology

dataset

Provenance

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