Why does interstate driving require greater ditance between vehicles?

Interstate driving requires greater distance between vehicles primarily due to higher speeds and the need for longer stopping distances. At highway speeds, vehicles cover more ground quickly, reducing reaction time to sudden stops or emergencies. Maintaining a safe following distance helps prevent collisions and allows drivers to react appropriately to changing conditions on the road. Additionally, it accommodates the potential for larger vehicles, such as trucks, which may require even more distance to stop safely.