- Big rigs need four times space as an average passenger car. Therefore, trucks must park in designated areas only. - Trucks should not be parked near driveways or side streets, as the tractor-trailer can obstruct a motorist’s view of oncoming traffic. - Trucks should never be parked on roads with speed limits over 30 mph unless disabled. - Truck drivers must alert other traffic using truck flares, flashers, and safety triangles when pulling off to the side of the road or highway. - Never park facing oncoming traffic.