Trivia Tuesday, April 28

Test your roads and bridges industry knowledge in our weekly trivia series!
April 28, 2026

Last week's answer

Question: As agencies look to remove personnel from active roadways, Automated Flagger Assistance Devices (AFADs) have become a staple in short-term lane closures. According to the MUTCD, what is a mandatory requirement for an AFAD when it is being used to stop traffic in a work zone?

Answer: It must be physically operated by a certified flagger who has a clear line of sight to the device and the approaching traffic.

The MUTCD states that "an AFAD shall be operated only by a flagger who has been trained on the operation of the AFAD. The flagger(s) operating the AFAD shall not the leave the AFAD(s) unattended at any time while the AFAD(s) is being used." 

Source: MUTCD

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