Accidents involving trucks, campers, and other large-sized vehicles such as SUVs are more dangerous than other types of collisions for a number of reasons. Trucks, especially very heavy ones such as semi-trucks inherently result in more serious accidents when they are involved in crashes due to their weight, size, and speed. These features similarly make accidents involving SUVs more dangerous, as SUVs tend to be larger than sedans and other standard automobiles. Additionally, the conditions that many truck drivers operate under force them to drive extreme distances, resulting in fatigue. Further, large emergency response trucks, such as fire trucks, are often driving at extremely high speeds and operating under different driving rules than ordinary traffic, creating more opportunities for accidents. Finally, commercial trucks also carry heavy cargo, complicating truck crashes and accidents.