If you're going to fight it because you don't want the ticket on your record, make sure to request the calibration records of the device that cited you the ticket. Better yet, get a traffic attorney.
If it's just about the money, then pay it. To appear at a dispute it would be, what? 10 hours of your time and 400 miles of driving on your vehicle (with a chance of getting another speeding ticket
)
If it's about the principle, F the man. These speed cameras and red light cameras enforcing traffic laws are a racket. The city of Chicago had plenty of sketchy behavior around their camera implementation. They'll always say it's about public safety until they get called out on doing things to increase revenue. Secretly lowering yellow light timings below their stated level of 3 seconds? No, that's not to ticket more people running reds. It was to prevent the most dangerous of crashes, obviously. Then why would they not fully disclose the shortening of the yellow time?
I thought that the whole 6th Amendment thing would have put the kibosh on camera enforcement long ago.
"In all criminal prosecutions, the accused shall enjoy the right ... to be confronted with the witnesses against him"
The cameras are only the tool, of course. So it's the company that installed, set up, calibrates, and maintains the tool that would be the witness I presume.