What Color Signal Must Be Displayed By Workmen To Protect Against Trains?

What Color Signal Must Be Displayed By Workmen To Protect Against Trains?

• A. Blue
• B. Red
• C. Green
• D. White

Answer: (A)

When workers are on or near the track and need protection from approaching trains, they use a blue flag. Displaying this blue flag communicates that protection is in effect and trains must stop or not pass beyond that point until the person in charge authorizes otherwise. The color is specifically designated for worker protection, distinguishing it from other signals like red (stop) or green/white signals used for different operations.

When workers are on or near the track and need protection from approaching trains, they use a blue flag. Displaying this blue flag communicates that protection is in effect and trains must stop or not pass beyond that point until the person in charge authorizes otherwise. The color is specifically designated for worker protection, distinguishing it from other signals like red (stop) or green/white signals used for different operations.