DGT test questions in English › Vehicle Lighting & Visibility

The traffic light on the right is green and the one on the left is red. If you are in the right lane and want to go straight, what should you do?

The traffic light on the right is green and the one on the left is red. If you are in the right lane and want to go…
  1. A)Continue straight on, as the green light applies to your lane.
  2. B)Wait until both lights are green.
  3. C)Wait until the left-hand light is green.✓ Correct answer

Why this is the correct answer

When an intersection has two traffic lights — one on each side of the road — and they show different signals, Spanish traffic rules establish a clear distinction based on which manoeuvre you intend to perform: • The LEFT-hand traffic light governs vehicles going straight ahead and those turning left. • The RIGHT-hand traffic light governs only vehicles turning right. This rule applies regardless of which lane you are in — what matters is your intended direction of travel. In this image, the left-hand light is red and the right-hand light is green. Since you want to go straight ahead, you must obey the left-hand light, which is red. Therefore, you must wait until the left-hand light turns green before proceeding. Why is option B wrong? Because option B says you must wait until BOTH lights are green. This is incorrect — you only need the left-hand light to be green. The right-hand light is completely irrelevant to your manoeuvre (going straight). It could be red, green, or amber — it makes no difference to you. Only drivers who want to turn right need to pay attention to it. Why is option A wrong? Because the green light on the right does NOT authorise you to go straight, even if you happen to be in the right lane. It only authorises right turns. Continuing straight while the left light is red would be equivalent to running a red light — a serious offence. Key takeaway: the position of the traffic light (left or right) determines which manoeuvres it controls, not which lane you are in.

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