What is the maximum speed limit for heavy trucks on the open highway at night?

The maximum speed limit for heavy trucks on the open highway at night is indeed 55 mph. This regulation is in place to ensure safety for both the truck drivers and other road users, as heavy trucks have different handling characteristics compared to lighter vehicles. At higher speeds, the risk of accidents increases, particularly under nighttime conditions when visibility is reduced.

The choice of 55 mph balances the need for efficient travel while recognizing the limitations and risks associated with operating large vehicles in the dark. Lower speed limits for heavy trucks help mitigate these risks, making the roads safer for all users. This understanding is crucial for heavy truck drivers to ensure compliance with state regulations and contribute to highway safety.