Basically, aside from switching to a brand-new mail truck, the U.S. Postal Service has no real solution for the problem. It’s reported that at least 120 delivery trucks have caught fire within the past five years however, nobody can figure out why. If these trucks were commercial or passenger vehicles, there would be a recall out by now.
There has been at least one injury, a letter carrier burning his hand, linked to the fires. Naturally, safety is the main concern. Safety advocates say the ongoing fires are an increasing public safety hazard