Final answer:
The four standard light colors used for lighted aids to navigation are red, green, white, and yellow. Yellow light is often used in navigation because it has good visibility and can be easily seen in various conditions.
Step-by-step explanation:
The four standard light colors used for lighted aids to navigation are red, green, white, and yellow. Yellow light is often used in navigation because it has good visibility and can be easily seen in various conditions. For example, yellow lights may be used on caution signs or uniforms of emergency workers for safety purposes.