A state trooper behind a bush. A possum in the street. A bicyclist on a busy roadway. All are day-or-night, rain-or-shine scenarios where a flash of headlights could warn another driver to watch out ...

When a semi-truck (ever wonder what the "semi" means?) driver flashes their headlights, they're not just playing around or in a hurry. Those lights are a form of communication on the road, and every ...

Every warning light on your car’s instrument panel exists because a federal regulation demanded it. Those small glowing symbols are not decorative; they are standardized signals tied to specific ...

Every driver knows how difficult it can be to see the road when a vehicle coming toward you at night leaves its bright lights on too long. Usually, a friendly flash of your own lights results in a ...

Add Yahoo as a preferred source to see more of our stories on Google. A state trooper behind a bush. A possum in the street. A bicyclist on a busy roadway. All are day-or-night, rain-or-shine ...