The ‘s automated speed cameras on Interstate 25 north of Denver caught more than 4,129 drivers exceeding the limit during the first month of enforcement, netting fines at the rate of $12,387 a day — revenue used to expand the system.
Following a one-month warning period, those violations occurred between April 2 and 27 along the I-25 stretch between Berthoud and Mead, a highway construction work zone, according to CDOT records.
Drivers caught speeding on camera receive $75 civil fines. The speed cams in work zones photograph drivers and time-stamp the images at two locations. CDOT’s automated system calculates an average speed through the corridor.
CDOT is targeting work zones for speed camera enforcement, and agency officials are considering additional zones on I-25, Interstate 70 and beyond, agency spokeswoman Stacia Sellers said.
They chose the north I-25 zone “due to the high speeds, so seeing that number of warnings and violations is about what we expected,” Sellers said.
On Colorado 119 between Boulder and Longmont, six speed cameras (between Jay Road and Lookout Road) have caught 18,200 violators since full enforcement began Jan. 12, records show. Once cameras are installed, CDOT officials say, drivers dramatically decrease their speeding.
“What we’re seeing on I-25 is that driver behavior is highly responsive to enforcement,” Sellers said. “Once signage and advertising were put in place to alert motorists of speed enforcement, we saw a dramatic drop in high speeds. That reduction in speed ultimately makes the work zone safer for both drivers and construction crews.”
A 2025 CDOT survey found 70% of Coloradans admitted to speeding on highways.
Speeding was a factor in more than 1,200 crashes on Colorado highways in 2025, which led to 91 fatalities, state records show.
The initial $309,675 in fine revenues from I-25 will be used to fund the expansion of speed camera enforcement in other work zones, Sellers said.
“We do not have a projection for revenue for the speed enforcement program, as the ultimate goal is not to collect fines, but to reduce speed. CDOT hopes that with the presence of speed enforcement cameras, we will continue to see speeds reduced in these vulnerable areas.”
