Where should hazardous materials placards be located?

Hazardous materials placards should be located on the outside of the vehicle to ensure visibility. This placement allows first responders and the public to quickly identify the type of hazardous materials being transported, which is crucial for safety during emergencies. Clear visibility from various angles, especially when approaching the vehicle, helps in assessing potential dangers.

Having the placards inside the vehicle would negate their purpose, as it would not provide any information to those outside who might need to react appropriately to the situation. Similarly, while placement on the back and sides of the vehicle might be helpful, the requirement is to have them positioned in such a way that all applicable sides are visible from the outside, thereby maximizing safety and awareness.