How far in advance must you signal before turning or changing lanes if the speed limit is 50 mph or greater?

Signaling in advance before turning or changing lanes is crucial for maintaining safety on the road, especially at higher speeds. When the speed limit is 50 mph or greater, it is required to signal at least 300 feet ahead of your intended maneuver. This distance allows other drivers ample time to notice your intention to turn or switch lanes, which is essential for preventing collisions and ensuring the smooth flow of traffic.

In higher speed scenarios, such as those involving a speed limit of 50 mph or more, a longer signaling distance is necessary due to the quick approach of vehicles behind you. For instance, if a driver is traveling at 50 mph, they will cover approximately 75 feet per second, making 300 feet approximately four seconds of warning time for other drivers. This advance notice can significantly reduce the risk of accidents by allowing sufficient time for other vehicles to react accordingly.