Before driving a mobile water supply (MWS) apparatus across a bridge, what should be verified?

Verifying the weight of the mobile water supply apparatus against the bridge's capacity is crucial because bridges are designed to support a specific weight limit. Exceeding this limit can lead to structural failure, posing safety risks not only to the driver and crew but also to the integrity of the bridge itself. Understanding the weight restrictions ensures that the vehicle can safely cross without compromising the bridge's stability.

While other aspects like the distance to the other side, the condition of the bridge surface, and even the color of the bridge might be relevant in certain contexts, they do not address the fundamental safety concern regarding the load-bearing capacity that the weight verification provides. Prioritizing the bridge's weight capacity helps prevent accidents and damage, making it the most critical factor to check before proceeding.