Final answer:
If you discover an overheated tire while hauling hazardous materials, park the vehicle in a safe location, notify authorities, and consult relevant guidelines.
Step-by-step explanation:
If you discover an overheated tire during an en-route inspection while hauling hazardous materials, there are specific steps you must take to ensure safety.
First, you should immediately park the vehicle in a safe location away from any potential ignition sources. Next, you need to notify the appropriate authorities and follow their instructions regarding the handling of the situation.
Lastly, it is important to consult the guidelines provided by the Department of Transportation (DOT) and the Pipeline and Hazardous Materials Safety Administration (PHMSA) for further guidance on handling hazardous materials incidents.