Final answer:
When crossing an intersection, ensure a car is far enough to allow you to walk at least 4 meters before it reaches you; at a speed of 60 km/hr and considering car lengths, 28 meters may offer a sufficient gap for safety.
Step-by-step explanation:
For maximum safety when crossing an intersection from a stop, it is essential to account for the distance required by cars to come to a complete stop, particularly in different road conditions, and considering the driver's reaction time. In towns and cities with a speed limit of 60 km/hr, to cross safely you will need to ensure the car is far enough away to allow you to walk a distance of at least 4 meters before the car reaches you. Considering the length of the average car is 3.5 meters, if a car is 28 meters away (which is approximately 8 car lengths), it may be safe to begin crossing, but this also depends on your walking speed and should be judged accordingly.