At what distance should you signal before turning or changing lanes?

Answer: B — At least 100 feet

Signaling your intention to turn or change lanes is crucial for maintaining safety on the road. The guideline for signaling at least 100 feet before making a turn or lane change is designed to give other drivers ample notice of your intentions. This distance allows enough time for other vehicles to react appropriately, ensuring that they can adjust their speed or position to avoid potential collisions. In urban areas or in heavy traffic, 100 feet offers drivers behind you a fair warning. When you signal early, it helps to create a more predictable driving environment, which is beneficial for both you and other road users. This practice promotes good communication on the roadway, reducing the likelihood of accidents and making it easier for other drivers to navigate safely around you. While shorter distances may seem sufficient in some situations, they do not provide adequate time for others to react, especially in high-speed or congested traffic conditions. Thus, the best practice is to signal at least 100 feet in advance to ensure a safer driving experience for everyone.