Depends on how often the camera needs to be repaired/replaced and where the money goes for the tickets it writes.

Cops need to start ticketing:

• people changing lanes without indication
• people turning without indication
• people driving in the inside lane when they’re not passing
• people who take more than 2 seconds to react to a light change
• People following bumper-to-bumper forming left-turn trains through yellow/red lights
• People who take more than a few seconds to get back up to speed

And also:

• Pedestrians who stand on the edge of the curb at the corner waiting for the light to change so they can cross
• Pedestrians standing literally on the edge of the road at the corner waiting for the light to change so they can cross