What aspect would likely display to indicate an alternate route?

The indication of an alternate route in railway signaling is typically represented by a specific color aspect. Green over green is commonly used to show that the train is cleared to proceed on an alternate route. In many train systems, green signifies a safe condition for train movement, and when displayed in this particular manner, it communicates that the train can take the alternate path without obstruction.

Other color combinations, such as red over red, indicate stop signals, yellow over yellow often pertains to caution or preparations for a stop, and blue over blue is less standard and can vary between different rail networks, often linked to other operational aspects rather than route indications. Understanding the significance of color combinations in signaling is crucial for safe train operations, as they guide train operators in making informed decisions about routing.