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103. Which of the following is the correct method to enter an expressway?
- Stop temporarily to check the traffic flow, then quickly enter the expressway.
- Stop temporarily before entering the expressway and abruptly enter when there are vehicles passing on the road.
- Enter the expressway even if there is not much space to enter, in consideration of the vehicle behind.
- Use the acceleration lane, keeping a certain speed and enter the expressway when enough space is secured.
Answer : 4