What principle was the Iowa statute banning trucks sixty-five feet long based upon?

The principle behind the Iowa statute banning trucks that are sixty-five feet long is grounded in public safety concerns. This type of legislation is typically enacted to address the potential hazards that large vehicles can pose on roadways, including issues related to maneuverability, visibility, and the overall dynamics of traffic flow. Longer trucks may require more space to navigate curves, turn, or stop, increasing the risk of accidents. Therefore, limiting the length of trucks aims to enhance safety for all road users, including drivers of passenger vehicles, pedestrians, and cyclists.

Other factors, such as environmental protection, road maintenance costs, and the protection of commerce within states, may also play roles in broader transportation regulation discussions, but the direct focus of this particular statute is primarily aimed at ensuring the safety of the public on the roads.