What is the distance of minimum taper length for a 25 MPH speed with a 12' lane width?

Prepare for the ATSSA Traffic Control Supervisor Test. Study with flashcards and multiple-choice questions, with hints and detailed explanations for each question. Ace your exam!

To determine the minimum taper length for a traffic control setup at a speed of 25 MPH with a lane width of 12 feet, it's essential to apply the appropriate formulas used in traffic control for taper lengths.

The standard formula for calculating the minimum length of a taper primarily involves the speed of traffic and the width of the lane. A common approach is to use the base taper length, which can be derived from guidelines such as the Manual on Uniform Traffic Control Devices (MUTCD).

For a speed of 25 MPH, the typical recommendation for taper length is calculated based on the lane width. The general guideline states that for every 10 MPH of speed, a minimum taper length of 10 times the lane width is used. Therefore, for 25 MPH, a taper length calculation can be performed as follows:

  1. Establish the ratio: For 25 MPH, it follows that we would calculate 15 times the lane width (since the additional taper for different speeds may increase depending on the situation).

  2. Multiply the lane width: For a 12-foot lane width, the calculation would lead to a minimum taper of 12 feet multiplied by the adjustment used for a 25 MPH speed scenario.

This leads to a recommendation of approximately

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy