- When it rains, turn on your headlights. It may be a sprinkle now, but you will not think about it in the deluge.
- When you change lanes, use your turn signal. You paid for it when you bought your car, might as well use it.
- Don't cross a solid line on the road. White, yellow, purple! It does not matter. When the line is solid, it means you are not supposed to change lanes there. Keep on driving. In another ten feet the line will break and that's where it is safe to change lanes.
I have been assured that these problems are not exclusive to the DC Metro area, but I seem to end up dealing with these idiots all the time.
What are other driver-caused hazards that need to be preached? Please share.