PennDOT offers the following tips for preparing your vehicle and driving in rainy conditions:

• Don't try to drive over a flooded road. Turn around and go another way.
  
• Don't underestimate the destructive power of fast-moving water. Two feet of fast-moving flood water will float a car. Even slow-moving water can sweep a car off a road or bridge.
  
• Slow down. Driving a little slower on wet surfaces is always a good idea.
  
• Try to stay at least two car lengths behind the vehicle in front of you.
  
• Check your wiper blades. Replace them if they feel pitted or rough to the touch. Ice or small pebbles on the windshield may have damaged them during the winter.
  
• Check your headlights, both low beams and high beams, before heading out to see if all the bulbs are working.
  
• Use headlights and windshield defrosters to make sure you can see ahead and behind you as clearly as possible.
  
• As you travel, monitor National Weather Service and local radio broadcasts for the latest information.
  
• Keep your vehicle fueled. If electricity is cut off, gas stations may not be able to pump fuel. Have a small disaster supply kit in the trunk of your car.
  
• If you are in your vehicle and water begins to rise rapidly around you, abandon the vehicle immediately.