Learning more about transportation through ADOT Facebook page

Social media is all about being social, which is exactly why we enjoy our Facebook page so much…

It not only allows us to share information, but the ADOT Facebook page is also the place where we get to have conversations with you and answer some really thoughtful questions from the online community.

If you follow us, you know those questions range from general project and construction-related inquiries to more specific ones about ADOT. Some of them inspire blog posts and some are just worth re-sharing, which is what we want to do today.

Below, we have two Facebook questions we received last week along with our answers. We thought these questions were worth highlighting here on the blog and hope they encourage more questions from you…

As always, you can comment on the blog or over on our Facebook page … we invite you to do so!

One of our Facebook friends asked why car registrations in Arizona expire in the middle of the month rather than the end of the month. 

Our answer: Registration renewal cycles are staggered and require certain vehicles to expire mid-month or at the end of the month.

Your registration’s “due date” will be determined by the initial registration date of the vehicle. For example, if you initially registered between the 1st and 15th of the month, your registration will become due mid-month in subsequent years. Vehicles registered after the 15th of the month will become due on/before the 30th of the month.

This staggered approach started in 1999 and is outlined in state statute. The method helps distribute the workload throughout the month and allows us to handle vehicle registration more efficiently.

Here’s another one that we found to be pretty interesting. A Facebook friend asked about the rationale behind renaming US 666 to US 191.

Our answer: Route 66 from Chicago to Los Angeles was designated as a US Highway in the 1920s. The decision was made at that time to number the major north-south highways that intersected Route 66 from east to west as 166, 266, and so on. 

When the highway got to Arizona, the next number was 666.

About 25 years ago a campaign began to change the name of the highway because 666 refers to the devil in the Book of Revelation. ADOT favored the change because the road signs were repeatedly being stolen.

The highway was changed to US 191 in 1992.