Which colors are acceptable for turn signal lamps mounted on the rear?

• A. Only red
• B. Only amber
• C. Red or amber
• D. Red, amber, or white

Answer: (C)

The correct answer indicates that both red and amber colors are acceptable for turn signal lamps mounted on the rear of a vehicle. This is aligned with national regulations governing vehicle lighting. Typically, amber lights are used for turn signals as they are highly visible and convey a clear message of intent to other drivers. However, in certain jurisdictions and for specific vehicle types, red may also be permissible for rear turn signals, particularly for vehicles where the rear lights are not solely designated for signaling purposes.

The other choices suggest limitations that do not encompass the complete range of accepted colors. The assertion that only red is acceptable disregards the prevalent use of amber turn signals. Stating only amber would exclude vehicles that may use red for rear turn signals in specific conditions, restricting the understanding of lighting regulations. Declaring only red, amber, or white does not align with standard practices, as white is typically reserved for reverse lights and is not used for turn signals in the rear.