Final answer:
The question discusses the rules against parking or stopping on expressways, where vehicles must use the shoulder in emergencies. Stopping in travel lanes is unsafe and illegal, as expressways are designed for continuous flow at high speeds.
Step-by-step explanation:
The question pertains to traffic laws, particularly the regulations surrounding parking and stopping on expressways. It is generally against the law to park or stop on the traveled portion of an expressway, for safety reasons. Expressways, with high-speed traffic and multiple lanes, are not designed for stationary vehicles.
In the rare circumstance that a vehicle must stop, such as due to a breakdown or a traffic jam, the vehicle should pull over onto the shoulder, completely out of the lanes of moving traffic.
This area is intended for emergencies and allows some buffer space between the stopped vehicle and the traveling vehicles. However, as general practice, planning ahead so as to not need to stop on an expressway, except in an emergency, is an important aspect of safe driving.