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In which of the following cases are you allowed to use the rear fog lights while driving a bus?

In the rain, irrespective of the distance to which visibility is limited.
In the fog which limits visibility to a distance shorter than 50 meters.
In the snowfall which limits visibility to a distance of 100 meters.

In which of the following situations are you required to switch from high beam to low beam lights while driving a bus?

When you see the parking lights of the vehicle parked in the hard shoulder.
When you see low beam or high beam lights of the vehicle coming from the opposite direction?
When you see a pedestrian going in the same direction as you are driving.

In which of the following situations should you use the speed retarder when driving a bus in a mountainous terrain?

Always while braking.
Only when driving on the bends.
Only when approaching the top of a hill.

In which of the following situations can the ABS of a bus be ineffective when braking?

When driving in a rain.
When driving on uneven road surfaces.
When driving on a dry road surface.

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