I can confirm this one as I was ticketed here; 43 in a 30 zone. When heading into downtown the speed limit changes from 40 on Brighton Blvd to 30 after the road becomes Broadway (before passing Blake). It's easy to miss the sign and right after the speed limit changes, you go down an incline under the train tracks then back up to ground level. The cop waits on the right at the top and tags you as you are going downhill. So not only are you already going at least 10 over the speed limit, but you are now accelerating downhill and the cop sees you before you see him because of the tracks blocking your view of the road ahead. This was my first speeding ticket...2 points on my record and 165 dollars to the city of Denver.

yes this is a speed trap it is very easy to miss the speed limit change and as soon as you come around the corner the cop is standing on the right side of the road flagging you in to a parking lot to give you a ticket .

This trap is still active as of October 2016. I was caught exactly in comment number 1. The speed limit changes to 30 just as you approach the underpass and even with your foot off the gas, you'll accelerate as it's downhill. Then just at the bottom the cop gets you. I was 11 over...$160.