Final answer:
You must begin signaling at least 100 feet before you turn. This ensures driver and pedestrian safety by providing adequate warning time, and it is also a legal requirement that helps avoid accidents and traffic violations.
Step-by-step explanation:
The question about how many feet you must begin signaling before you turn is primarily concerned with driver's education, which relates to health and safety on the road. The exact distance required for signaling before a turn can vary by state or region, but a commonly accepted distance is at least 100 feet before the turn. Understanding this distance is essential for a couple of reasons. Firstly, signaling early gives other drivers and pedestrians ample warning of your intent to turn, allowing them to react accordingly to avoid accidents. Secondly, it is a legal requirement, and failing to signal properly can result in traffic violations. For instance, if a driver needs to hit the brakes or a pedestrian needs to judge when it's safe to cross, the distance covered by a signaling car will inform their decision. If a vehicle were 28 meters away—equivalent to 8 car lengths—it may not be safe to walk across the road without first ensuring the car is signaling and has ample time to slow down or stop.