Scottsdale was one of the first Arizona cities to adopt photo enforcement on its streets.

A new study from researchers at Lee Engineering concluded that photo enforcement to combat speeding and red-light running has made Scottsdale streets safer.    

The study found cameras reduced crashes 24 percent at intersections and 37 percent on other road segments.

“The facts are very clear: the locations with photo enforcement have seen a statistically significant reduction in crashes,” said Scottsdale Transportation Director Paul Basha.

The study compared data from up to five years before and after enforcement cameras were installed.

Scottsdale has 17 fixed enforcement cameras in service, two vans and two towers set up near schools.

“People are driving safer and better in Scottsdale everywhere because we have photo enforcement,” Basha said, noting that collisions were reduced even at places without cameras.

Basha said this data could encourage more photo enforcement in the city.