A pole that is over 20 years old should be supported with a line truck boom or other device in case it is unstable.

• A. 10 years
• B. 30 years
• C. 40 years
• D. 20 years

Answer: (D)

Old poles can become unstable as they age because wood deteriorates and internal flaws may develop. When a pole is over twenty years old, extra stabilization is advisable to prevent movement or failure during work. Using a line truck boom or another supportive device provides a controlled, temporary brace that keeps the pole upright and reduces sway while crews perform maintenance, protecting both workers and equipment. The twenty-year threshold is the practical trigger for this added support; younger poles typically don’t require it, while the other ages don’t capture that specific safety cue.