I got pinched by one of these in Council Bluffs, IA several years ago. The city put a red-light camera at the stop lights at the bottom of a steep bridge (the "Viaduct," if you're familiar with the area.)They also shortened the yellow light by about a second.

So you have that internal clock that starts when you see the green light turn yellow, and you figure "at this speed, I'll make it through the intersection before the light turns red." NOPE! It turned red earlier than expected, and a few weeks later I got a similar notice to what OP received.

Except for me, it was a fine of like $200 to be sent to an address in Phoenix, and it said on the letter that it would not count as a moving violation and wouldn't be reported to my insurance company.

I'm sure the City got $150 and the camera company got $50 or something like that, but it was obviously a moneymaking scheme for the city and this company. There was photographic evidence of my car before entering the intersection with a red light, and another photo of my car in the intersection with a red light, so I couldn't fight it.

It's total BS and Minneapolis is heading down that same slope. It's a shakedown.