In Portuguese road regulations, what does a steady circular amber (amarelo) traffic light require of approaching drivers?

Answer and explanation

Correct answer: B. Drivers must stop unless they are already so close that stopping

  1. Step 1: Amber light duties. Step 2. A steady yellow light commands drivers to stop, allowing continuation only if stopping cannot be done without abrupt danger. Answer: Drivers must stop unless they are already so close that stopping safely is impossible. Why not the others: Accelerating on yellow is an infraction.

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