Speed trap I-29, Sioux City, Iowa. Through contruction zone.

The good news is that speed camera ticket is just a civil penalty of $100, and is not reported to the DMV. You don't need to report it either - it's NOT a traffic violation, just a money grab.

Here's some easy directions on how to run this stretch of I-29 through/near Sioux City:
Southbound on I-29: Coming into Iowa on 1-29 southbound, it briefly widens to 3 lanes after the bridge at the border MM 151, so grab the middle lane. In less than a mile, it goes back to 2 lanes and you'll be in the right hand lane. Right quick the speed limit will drop to 55 and the yellow advance warning sign is only about 100 yards before the speed limit change. After passing the Hamilton Blvd/Nebraska MM149 exit, grab the left lane because there will be several exits coming up and bridge construction in 2 miles. Stay in the left lane and run 55. Keep your eyes open for slowing traffic in this stretch. A mile later the speed limit drops to 50 mph. Watch your speed as you go over a little rise at the Gordon Drive 147B exit, as the idiots frequently stomp on their brakes and come to a dead stop in this stretch. Shortly after, there is 2 lane traffic and the speed limit drops to 45 mph through the bridge construction zone. There is a 13' width restriction here too.

Speed limit then goes back to 65 but another construction zone at MM 143 drops back to 55 mph (near the Singing Hills exit that has a Love's and a Pilot with their own construction zone from hell). Between MM 143 to 140, it is 2 lane traffic running 55 mph. At MM 140, back to 70 mph speed limit. From MM 136 - 134, more construction and 55 mph limit, and then back to 70 mph.

Northbound on I-29: From MM 134 (next to a rest stop) speed limit drops to 55 mph until MM 136. Then back to 70 mph. At MM 140, back to 55 mph speed limit. If you're driving a loaded tanker or other unstable load, take the poorly built transition crossover here (MM140-141 area) into the other side at 40-45 mph or you're gonna have a bad day - at a minimum, you'll need to change underwear. The left side on the crossover drops too fast and your load might shift.

Back to 65 mph after this zone until you get past the big Highway 20 /Nebraska overpass past MM144 /Love's/Pilot exit. There will be 3-4 lanes here, and speed limit then drops to 50 mph. Grab the #2 lane early(2nd lane from the left) to go through the next construction zone. 45 mph speed limit through the bridge zone. There is a 13' width restriction for this stretch. Be prepared to stop here too because the idiots sometimes come to a dead stop before the bridge construction zone here. After this zone, the speed limit then resumes to 55 mph until past MM149.

Once you get past Exit 149 and the speed limit goes back to 65 mph, grab the left lane, run 65 mph and stay there in the left lane until you pass MM 4 in South Dakota. There are lots of 4 wheelers doing dumb things through this zone. Then grab the right lane because at about MM9, there is a Roll in Motion truck scale and scalehouse in South Dakota. Scalehouse is normally open weekdays during the daytime. If you get pulled in, say hi to Fred.

Sorry for the length of this post, just trying to give some local knowledge.

 

Is there another way speed limits change...?

So... this construction zone is invisible until you're in it? You can't slow a 4-wheeler from 65 to 55 in the distance from which you can read the sign?

I don't know whether to suggest you have your vision checked or learn to drive.

There is no such animal as a speed trap. Speed limits are posted on those signs directly under where they read SPEED LIMIT.

 

No such thing as speed traps??? Lol OK. ... Ever seen a speed limit sign just so happen to be covered partially by a tree branch or large bush? If you drive through this part of 29, you will see what the op is talking about.

 

Right now you won't anywhere on that stretch of 29.Signs are clearly visable.But these guys doing the construction have no clue how to do it right.There's areas where the right lane ends and no warning signs.Luckily not a lot of traffic there would have already been accidents.Right now Sioux City is tore up all over the place.Hard telling when they'll get 29 done and on Singing hills where the trk stops are.Construction is ungodly slow,I swear they spend only a forth of their time working and the rest standing around and on breaks.

 

Union coffee break!!!!

 

Like bobcat said,its all about revenue since it doesn't give you time to slow down.I imagine they catch a lot of speeders on a daily basis.Take this as a lesson learned not just Sioux City but any construction zone.