Practice question

Under Caltrans Standard Plan T11, what is the required device spacing in the merging taper for a stationary lane closure on a multilane conventional highway posted at 45 mph?

  1. 90 feet maximum device spacing.
  2. 45 feet maximum device spacing.
  3. 30 feet maximum device spacing.
  4. 15 feet maximum device spacing.

Answer: B — 45 feet maximum device spacing.

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