What color are the front turn signals required to be on a bus or trailer less than 80" in width?

Front turn signals on a bus or trailer that is less than 80 inches in width must be amber to comply with regulations. The use of amber light signals is intended to enhance visibility and communicate to other road users that the vehicle is preparing to turn or change lanes. This color is specifically designated for signaling intentions while still allowing the vehicle to be more easily seen in various driving conditions.

The selection of amber as the turn signal color helps differentiate these signals from those used for stop or tail lights, which are typically red. It ensures that the signals clearly convey the vehicle's intentions without causing confusion for other drivers. In certain regulations, the combination of amber lights is emphasized to improve safety on roadways, particularly where a slower-moving vehicle like a bus or trailer may be present.

Other color combinations in the options given do not align with the regulations set forth for turn signals, further supporting the necessity for amber lights in these scenarios.