Practice question

What is the minimum merging taper length for an 11-foot lane closure on a road posted at 40 mph?

  1. 294 feet, calculated using L = W × S² / 60.
  2. 440 feet, calculated using L = W × S.
  3. 147 feet, calculated using L = W × S² / 120.
  4. 98 feet, calculated using L = W × S² / 180.

Answer: A — 294 feet, calculated using L = W × S² / 60.

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