At 60 MPH, what is the typical flare rate for Barrier Rail?

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!

A typical flare rate for barrier rail at 60 MPH is indeed 18:1. This is based on standard guidelines designed to ensure the safety of both motorists and road workers. A flare rate represents the horizontal distance required for the barrier to safely transition from a larger width to a narrower width, allowing vehicles to pass smoothly and avoiding abrupt changes that could lead to accidents.

The selection of an 18:1 flare rate is relevant because it balances the need for space with the limitations typically present in highway designs. This ratio provides enough distance for drivers to adjust their trajectory when approaching a barrier, reducing the likelihood of collisions.

In highway safety and traffic control, it’s critical to adhere to these standards as they have been established through extensive research and field testing. Properly implemented, these flare rates contribute to both the effectiveness of the barrier in protecting workers and the overall safety of the roadway.

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