Practice question

What is the standard bolt circle pattern used for most traffic signal mast arm pole base plates?

A square pattern with bolts at the corners
A circular pattern with bolts evenly spaced around a specified bolt circle diameter
A triangular pattern with three bolts
A random pattern determined by the installer

Answer: B — A circular pattern with bolts evenly spaced around a specified bolt circle diameter

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