Which sign warns the driver that he is approaching a tunnel?
Pick an answer to test yourself
The correct answer: 138
Sign 138 is the sign that warns the driver that he is approaching a tunnel. The other numbers offered, 633, 634 and 127P, are different signs that do not warn of a tunnel, so learn the number together with the picture.
This question appears in the theory test for license:B · private carA · motorcycle1 · tractorC1 · light truckC · heavy truckD · bus
