Final answer:
When on a highway, you should signal at least 100 feet before turning to ensure other drivers are adequately warned of your intent to turn. This is a part of safe driving practices that consider stopping distances and reaction times, which also relate to pedestrian safety when crossing roads.
Step-by-step explanation:
If you're on the highway, you should signal your intention to turn at least 100 feet before the turn. This is crucial because it provides other drivers with adequate notice of your intentions, allowing them to adjust their driving accordingly. For safety, it's important to have a clear understanding of safe distances when traveling at high speeds or making decisions about crossing streets. Factors such as the distance a driver covers before hitting the brakes, the time it takes for a truck to stop after hitting the brakes, and total distance a vehicle covers to stop are all critical in making safe driving and crossing decisions.
For example, when considering whether it's safe to cross a road, you must take into account the speed of approaching vehicles, their distance from you, and your own walking speed. On roads with higher speed limits, such as town or city roads with a limit of 60km/hr, it is advisable to give yourself extra space, ensuring you can walk at least the width of a car plus an additional 2 meters (total 4 meters) before the car reaches you. Additionally, when vehicles exceed the speed limit, situations become more dangerous, highlighting the necessity for traffic signals to control the flow and speed of traffic.