What does this sign indicate?

A)A road closed to traffic.
B)Level crossing with barriers.
C)Level crossing without barriers.Correct
All drivers must exercise extreme caution and reduce their speed below the maximum permitted when approaching a level crossing or a movable bridge. This is because it is a dangerous situation in which we must drive with great care and caution.
The hazard warning sign (Image 2) will indicate the danger due to the proximity (approximately 150 metres) of a level crossing without barriers.
Just before the level crossing, we will encounter the sign shown in the question, indicating a level crossing without barriers, or, if the level crossing has more than one railway track, the sign in Image 1 will be used.
The hazard warning sign (Image 2) will indicate the danger due to the proximity (approximately 150 metres) of a level crossing without barriers.
Just before the level crossing, we will encounter the sign shown in the question, indicating a level crossing without barriers, or, if the level crossing has more than one railway track, the sign in Image 1 will be used.