What is likely to be the first question emergency crews will want answered when they respond an overturned chemical transport truck?

Is the load hazardous?

This is the most important question to answer, as it will determine the course of action that the emergency crews take. If the load is hazardous, the crews will need to take special precautions to protect themselves and the public. This may include wearing special protective clothing, using specialized equipment, and setting up a perimeter around the scene.