5 intersections with the biggest drop in crashes

These five photo-enforcement locations showed the most-significant drop in the number of annual collisions after cameras were installed.

Scottsdale/Thomas northbound

Before: 18.8 crashes.

After: 11.6 crashes.

Frank Lloyd Wright/Greenway-Hayden Loop eastbound

Before: 13.7 crashes.

After: 6.7 crashes.

Hayden/Indian School southbound

Before: 12.3 crashes.

After: 6.7 crashes.

Hayden/Thomas eastbound

Before: 19.3 crashes.

After: 15 crashes.

Scottsdale/Cactus northbound

Before: 11 crashes.

After: 7 crashes.