Freeway in the desert

ADOT Blog

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Where do speed limits come from? How are highways engineered, signed, striped, etc., to maximize safety? To explain these and other aspects of state highways, we're pleased to have State Traffic Engineer Kerry Wilcoxon as this week's On the Road With ADOT guest.
See Adopt a Highway volunteers across Arizona caught in the act on National CleanUp Day 2025.
ADOT has more than 100 specialty license plates featuring a range of worthy causes or charities. To boost awareness, we showcase one specialty license plate each week on social media. We call this the "Specialty Plate Spotlight" and here are the plates that were featured in September.

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The State Transportation Board voted yesterday to formally adopt the 2014-2018 Five-Year Transportation Facilities Construction Program.
Who says safety messages have to be humorless or uninteresting? Not us and certainly not anyone out there who has taken part in Haboob Haiku: Year Two!
A temporary support structure collapsed this morning, killing one worker and seriously injuring another.
You’ve likely recycled plastic, glass, paper, maybe even your old electronics, but did you know ADOT recycles its old asphalt pavement?
Yes, paving on N20 has begun, but drivers shouldn’t plan on using the route as a detour until construction is completed later this summer.
We’re loving all the Haboob Haikus that have been rolling in this week… Like last year, this poetry challenge with the funny name has helped us accomplish an important goal, which is to get people talking about the danger of driving in dust storms. Because we cannot forget that dust storms can pose very real risks to motorists in this state – just take a look at the video above for proof.
Last year, ADOT launched its very first “Haboob Haiku” challenge in an effort to spread the word about dust storm safety and the response was pretty amazing. That’s actually a huge understatement ... Not only did we receive over 600 original haikus (some even by phone and snail mail), but #HaboobHaiku yielded stories in media outlets all over the world (they even wrote about it in New Zealand!).
As you can see in the video above, ADOT and the Navajo Division of Transportation officially broke ground on the Navajo Route 20 paving project yesterday morning. The ceremony marks the start of a project that we’ve blogged about before.
Marking months of planning and collaboration, the Navajo Division of Transportation and ADOT are ready to officially break ground on the Navajo Route 20 paving project.
ADOT’s yearly Motor Vehicle Crash Facts report shows that 823 people lost their lives in crashes on state and local roadways in Arizona in 2012.