Road signs1 of 3
A fluorescent yellow-green sign warns drivers about:
The answer
Answer: C. The guide ties sign colors to meaning: red for prohibited actions, orange for construction and maintenance, yellow for general warnings, fluorescent yellow-green for school, pedestrian and bicycle activity, white for regulations, green for directions, blue for motorist services, and brown for recreation and cultural sites.
Source: Washington Driver Guide — 4.12 Signs (sign colors)