Practice question

What is the minimum required shoulder taper length when closing a 10-foot wide paved shoulder on a roadway with a posted speed of 50 mph?

  1. 500 feet, which is the full merging taper length required for closing lanes.
  2. 333 feet, which is two-thirds of the full merging taper length for shifts.
  3. 250 feet, which is half of the full merging taper length for shifts.
  4. 167 feet, which equals L / 3 (one-third of the merging taper length).

Answer: D — 167 feet, which equals L / 3 (one-third of the merging taper length).

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

Practice more: C-31 Traffic Control Practice Questions - California CSLB C-31 Construction Zone Traffic Control Examination Exam →