Philadelphia Drivers License Practice Test

What signifies that a vehicle can make a straight ahead or left turn at an intersection?

1. A left-turn arrow

2. A straight arrow sign

3. A green traffic light

4. A sign indicating straight or left turn

The correct answer is: A sign indicating straight or left turn

The correct answer indicates that a sign specifically indicating the option to go straight or make a left turn at an intersection provides clear and direct guidance to drivers. This kind of signage helps to communicate the intentions of the traffic flow at that intersection, ensuring drivers are aware of their options. A sign indicating both straight and left turns provides clarity, especially in complex intersections where multiple movements can occur simultaneously. This kind of signage is vital for maintaining safety and efficiency, as it helps prevent confusion among drivers about whether they can proceed straight, turn left, or if they are required to turn left only. In contrast, other choices present specific signals or indications that may pertain to certain scenarios but do not universally convey the flexibility of making both a straight or left turn. For example, a left-turn arrow specifically signals a left turn only, while a straight arrow sign indicates proceeding straight ahead without making a turn at all. Meanwhile, a green traffic light indicates that vehicles can proceed in the direction allowed by any accompanying signs or signals, but it does not independently denote the option to turn left.