Question 26
Traffic signals at each intersection on a main road all change on the same 2-minute cycle. A taxi driver knows that it is exactly 3.5 km from one intersection to the next. Without breaking the 50 km/h speed limit, what is the highest average speed, in kilometres per hour, he can travel to get to each intersection as it just changes to green?
**Interpretation note (AI):** The verified answer assumes that all signals start green at the same instant every two minutes. Equal cycle lengths alone, without this synchronization, would not determine the answer.
**Interpretation note (AI):** The verified answer assumes that all signals start green at the same instant every two minutes. Equal cycle lengths alone, without this synchronization, would not determine the answer.