A Systematic Review of Large Agriculture Vehicles Use and Crash Incidents on Public Roads

Background: Agricultural vehicles are a common sight on rural public roads. However, due to their larger mass (height, width, length, and weight), there are concerns about safety. The aim of this paper is to explore crash incidents on public roads of agricultural vehicles to determine the size of the problem, risk factors, and potential prevention strategies. Methods: A systematic review using the PRISMA guidelines was undertaken of peer-reviewed literature from Medline, Agricola, Scopus, PsycInfo, Science Direct, Web of Science, and SafetyLit. Crash incident rates, risk factors, and prevention strategies were extracted from the articles, and a review of quality was undertaken using McMasters guidelines. Results: Included in the review were 30 articles, with the majority from the United States. Crash risk rates, where reported, were low relative to agricultural vehicle use and when compared to overall road crash numbers. Crash risk factors included weather and visibility, age, personal and driving characteristics, road conditions, and event characteristics. Prevention strategies proposed were targeted at drivers and operators, vehicles, road design, driving behavior, and surveillance, policy, and technology. Conclusions: Overall, reported crash numbers involving large agricultural vehicles were low. Currently, there is limited capacity to calculate exposure rates compounded by the difficulties in identifying road incidents that involve agriculture vehicles. Better surveillance systems are required to improve our understanding of exposure and crash incident rates. Future research into the multiplicity of interrelated factors involved in agriculture vehicle crashes on roads, exposure rates, and evidence for the effectiveness of the prevention strategies is required.