Throughout Ohio, Semi-trucks, 18 wheelers, tanker trucks and other large commercial vehicles are common sites on roads and highways. Weighing as much as 80,000 pounds, they are significantly larger and heavier than the average consumer vehicle. Since these large trucks are capable of causing significant and devastating damage – both to property and bodily injury – they are governed by several federal regulations aimed at reducing the risk of harm. One of the most important regulations are known as “hours-of-service” regulations. These laws limit the total number of hours a truck driver is allowed to drive in any given time period. It further mandates how much time must be taken off between driving shifts.