Lighting

Queen Creek Tunnel
An innovative project near Superior is set to improve visibility and reduce maintenance costs.
Worker fixing a streetlight in 1978
The photo was taken in December 1978 and, according to our notes, was snapped on I-15 near the Cedar Pocket exit.
Bucket truck
With more than 6,000 miles of highway to oversee and maintain, ADOT relies on its fleet of trusty vehicles to help get the job done.
ADOT’s efforts to ease some of the stop-and-go traffic on Grand Avenue have been pretty successful so far, but you don’t have to just take our word – we’ve got the results to prove it! Before we reveal those findings, let’s back things up a bit first …
Nothing seems to slow a commute down like having to stop at one red light after another. That’s why ADOT is working to synchronize some of its signals – a move that can help traffic flow a little more smoothly while reducing the type of stop-and-go traffic that can lead to congestion.
Ramp Meter on Freeway
If you drive Valley freeways during rush hour, you’re probably pretty familiar with ramp meters … They’re the two-light signals positioned at most Valley on-ramps that tell motorists when it’s okay to head onto the freeway. Ramp meters have been used in the Phoenix-Metro area for about the past 20 years and maybe you think not much about them has changed … but, actually they’ve recently become much more efficient!
Subscribe to Lighting