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

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A contractor must install a shifting taper to align traffic across a 12-foot lateral shift on a highway posted at 60 mph. What is the minimum required shifting taper length?

720 feet, which represents the full merging taper length for a 60 mph zone. 540 feet, which represents three-quarters of the full merging taper length. 360 feet, which equals L / 2 (half of the full merging taper length). 240 feet, which equals L / 3 (one-third of the full merging taper length).

Correct Answer:

360 feet, which equals L / 2 (half of the full merging taper length).

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