If a 4-digit ID number is found on an orange panel of a truck, where should you look for guidance in the ERG?

When a 4-digit ID number is found on an orange panel of a truck, the appropriate section to reference in the Emergency Response Guidebook (ERG) would be the yellow-bordered section. This section is specifically designed for looking up hazardous materials using their identification numbers.

The ID numbers on placards, such as those you would find on orange panels, correspond to specific hazardous materials, and the yellow-bordered section provides detailed information on those materials, including their potential hazards, emergency response measures, and key first aid instructions. This allows responders to quickly access the necessary information to handle the situation effectively and safely.

The other sections serve different purposes: the green-bordered section is for guiding responders with protective actions, the white-bordered section provides general information and guidance on emergency response, and the orange-bordered section contains information about specific incidents and responses but is not focused on identifying materials via their ID numbers.