Idaho Written Driver's License Practice Test

What color must rear turn signals be in Idaho?

1. White or amber

2. Red or amber

3. Green or blue

4. Yellow or orange

The correct answer is: Red or amber

In Idaho, the law specifies that rear turn signals must be red or amber in color. This requirement is intended to provide clear communication to other drivers on the road when a vehicle is about to make a turn. The use of red or amber helps enhance visibility and is consistent with traffic standards across many states, ensuring that all road users can easily recognize the signals. The colors red and amber are easily distinguishable and align with common color associations for traffic signals, where red typically indicates caution or alertness, and amber indicates a change or action is required. This consistency in signal color helps maintain safety on the roadway by minimizing confusion for drivers.