Final answer:
The maximum legal length of a semi-tractor trailer combination in the US is 80 feet, although this can vary by state. Tesla's Semi, with its 500-mile range, faces challenges like charging infrastructure and load capacities, which are crucial for long-haul trucking.
Step-by-step explanation:
The maximum length of a semi-tractor trailer in the United States is legally restricted to ensure safety and manageability on the roads. The Department of Transportation (DOT) regulations specify that the total length of the tractor and semi-trailer combination cannot exceed 80 feet in most cases. This includes the front bumper of the tractor to the rear bumper of the trailer, but does not include safety equipment like reflective bumpers. Each state has its own regulations that can vary slightly, so it's important for truck operators to be aware of the rules in the states where they'll be traveling.
Regarding Tesla's entry into the trucking industry with its Semi, while it boasts an impressive electric 500-mile range, it's important to consider the challenges outlined in a detailed analysis, such as charging infrastructure and load capacities relative to traditional diesel trucks. These factors can impact its operational feasibility, especially for long-haul trucking where the length and capacity of the trailer are critical.