Practice question

What should the inspector verify about the signal head backplate installation?

Only that a backplate exists
The backplate is the correct size for the signal head, properly aligned, securely fastened, and provides adequate contrast enhancement for signal visibility
Only the backplate color
Backplates are optional and need not be inspected

Answer: B — The backplate is the correct size for the signal head, properly aligned, securely fastened, and provides adequate contrast enhancement for signal visibility

The correct answer is shown above. Try the full quiz for additional practice.