This road sign:
Indicates a section of road with a steep incline . The sign indicates the actual highest longitudinal gradient of the road .
Indicates a section of road where local conditions make the descent dangerous . The sign indicates the actual highest longitudinal gradient of the road .
Indicates an escape lane behind a dangerous descent, where in the event of an emergency, such as a reduced brake effect, the vehicle can be stopped by aids, such as a counter-slope, rough gravel surface, etc. .
Correct answer :a
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