Final answer:
It is typically not permissible to drive to the left of the centerline of a highway except under specific conditions such as overtaking or avoiding obstacles. Safety considerations for crossing a road include ensuring a sufficient gap from oncoming vehicles, speed limit adherence, and using pedestrian crossings. In emergencies, some traffic rules may be cautiously broken.
Step-by-step explanation:
Is it permissible to drive a motor vehicle to the left of the centerline of a highway? Generally, the answer is No. However, there are specific instances when a vehicle may cross the centerline such as when overtaking and passing another vehicle that is traveling in the same direction, or when an obstruction exists making it necessary to drive to the left of the centerline. You must ensure it is done safely without interfering with oncoming traffic.
Regarding how far away a car must be before considering it safe to cross, this is a judgment call that depends on various factors including the speed limit, visibility, and reaction time. It is often suggested to use a rule-of-thumb such as ensuring a gap equivalent to several car-lengths, for example, the length of 8 cars when traveling at lower speeds or clear viewing distances during optimal conditions. At higher speeds or less visibility, more distance would be needed for safety.
Many variables contribute to the safety of crossing the road, such as whether cars adhere to the correct speed limit, visibility, the presence of pedestrian crossings, and traffic density. The color of your car does not determine the speed you are traveling at. It is generally safer to cross at designated pedestrian crossings or intersections controlled by traffic signals.
In emergency situations, like when a pregnant woman is about to give birth in a vehicle, some jurisdictions have exceptions that allow you to break typical road rules, such as stopping at a red light. However, this would typically require you to do so with caution and perhaps at the risk of legal consequences depending on the local law enforcement's view on the necessity of the action taken.