This is a sporadic enforcement, usually two to three times a month, usually on Thursday or Friday nights. They will have multiple Cedar Rapids Police cars, and sometimes the Iowa Highway Patrol will also be involved. They sit in the median just prior to the HWY 30 East on-ramp overpass, and usually go after vehicles going South on I-380. I usually can see it coming when I see the brake lights lighting up on cars ahead of me! One time I didn’t see it coming, and was 7 mph over the limit (60 mph) but didn’t get pulled over.