Tree Hazards

Trees are the most common hazard involved in run-off-the-road fatal crashes, accounting for 48 percent of roadside fatalities. All plantings within a clear zone should consist of shrubs and other plantings that will not grow into fixed objects. Consider any planting with an expected mature trunk size of greater than 4 inches in diameter as a fixed object. See Roadside Hazard Mitigation page for strategies to address existing roadside hazards, including trees.