The reasonable speed on an expressway:

1. AIs a speed that is not lower than the maximum permitted speed in any case.
2. BIs the speed that will give you maximum travel range, provided that it does not exceed the maximum permitted speed.
3. CIs a speed that takes into account the traffic situation, and is not higher than the maximum permitted speed on this road.
4. DIs the speed decided by the driver, provided that it does not exceed the maximum permitted speed.

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