Which statement about priority when entering an expressway is correct?
Priority when entering an expressway is set separately for ordinary motor vehicles and emergency vehicles (Article 65(1) and (2) of the Road Traffic Act). First sort out who yields between an ordinary entering vehicle and vehicles on the main lanes, then think about how that changes for an emergency vehicle, and remember that stopping on the main lanes raises the risk of a rear-end crash.
Answer: ②
Explanation
Under Article 65(1) of the Road Traffic Act, a non-emergency vehicle entering an expressway must not obstruct vehicles already travelling there, and under Article 65(2) other vehicles must not obstruct an emergency vehicle that is entering. Entering vehicles do not have priority over main-road traffic, and main-road vehicles stopping in their lane would only raise the risk of rear-end collisions.
Legal basis: 도로교통법 제65조