Final answer:
The space needed to safely pass on the highway at speeds of 50 to 70 mph depends on several factors including the speed of both vehicles, the driver's reaction time, and road conditions. A general rule for safe passing is to allow a gap of at least 10 to 12 seconds.
Step-by-step explanation:
When passing a car on the highway at speeds between 50 to 70 mph, the space needed to pass safely is not explicitly mentioned in the provided information. However, it's important to consider the length of your own car, the speed of the cars being passed, and ensuring a safe distance to avoid collision. The safe passing distance can vary based on the specific speed and road conditions.
It's essential to take into account variables such as reaction time, the speed of your vehicle and the one being passed, and the time it takes to pass a vehicle safely. According to defensive driving principles, drivers are often advised to have a gap of at least 10 to 12 seconds between their car and the vehicle in front when driving at highway speeds. This allows enough time and distance to respond safely to unexpected events.