Drivers of 18 wheelers and other commercial vehicles are held to a higher standard of driving. If they neglect to turn on their flashing lights when they’re on the side of the road, don’t move over far enough onto the shoulder, don’t properly secure their cargo, or don’t leave enough clearance when making a left turn, and in many other cases, the driver could be considered negligent. If you want to know if the driver of the 18 wheeler involved in your case was negligent, contact a personal injury attorney.