Pay attention to barricades
Don't ignore them by driving past them.
Do not drive through standing water on roads or in parking lots. The average automobile can be swept off the road in 12 inches of moving water, and roads covered by water are prone to collapse. Attempting to drive through water also may stall your engine, with the potential to cause irreparable damage if you try to restart the engine. If you come upon a flooded street, take an alternate route.
Take extra precautions
If no alternate route exists and you have no other reasonable alternative but to drive through standing water.
Do your best to estimate the depth of the water (if other cars are driving through, take note of how deep the water is).
Drive slowly and steadily through the water
Avoid driving in water that downed electrical or power lines have fallen in - electric current passes through water easily
Stay off the telephone unless you must report severe injuries
If you can't restart your vehicle and you become trapped in rising water, immediately abandon it for higher ground. Try to open the door or roll down the window to get out of the vehicle. If you are unable to get out safely, call 911 or get the attention of a passerby or someone standing on higher ground so that they may call for help.