At an unsigned four-arm crossroads, with all roads paved and no rail vehicles, yellow approaches from north heading south, red from east heading west and blue from south heading north. Nobody approaches from the west. Which vehicle has no vehicle approaching from its right to yield to?

Correct answer

The yellow vehicle.

Yellow: the west arm lies to its right, and nobody approaches there. Red must yield to yellow approaching from its right; blue must yield to red approaching from its right. Yellow and blue approach from opposite directions, not from each other’s right. This is Article 57’s general rule in the stated conditions; priority does not allow creating danger or blocking the crossroads.