Final Answer:
Ways to estimate the depth of water on a roadway include using visual cues such as tire submersion, reference to known objects, checking water flow, and utilizing depth markers.
Step-by-step explanation:
Estimating the depth of water on a roadway is crucial for safe navigation, especially during floods or heavy rainfall. Visual cues, such as observing the submersion of tires on passing vehicles, can provide a quick reference to the water depth. Reference to known objects like road signs or landmarks can help gauge the water level. Additionally, observing the flow of water can indicate its depth and force. Depth markers, if available, provide a direct measurement of the water level.
It's essential to exercise caution and avoid driving through flooded areas when unsure of the water depth, as even relatively shallow water can pose significant risks to vehicle and occupant safety.
Estimating water depth on a roadway involves visual cues, reference objects, water flow observation, and depth markers.