What is one of the key safety checks before operating a water supply vehicle?

One of the key safety checks before operating a water supply vehicle is ensuring the vehicle's brakes are functioning properly. The brakes are a critical component for vehicle safety, especially for a vehicle that may be transporting large amounts of water and could be subject to varying terrains and conditions. Properly functioning brakes are essential for quick and effective stopping in emergency situations, which is a common scenario for water supply vehicles responding to fires or other urgent situations.

If the brakes are not in optimal condition, this can lead to a delay in stopping, risking accidents both for the operator and others on the road. Regularly checking the brakes ensures that the vehicle can operate safely and respond effectively when needed. While checking fuel levels, verifying tire pressure, and inspecting windshield wipers are also important maintenance tasks, they do not directly impact the vehicle's ability to stop and maneuver safely in critical situations as the brakes do.