View Full Version : I-Pass speed enforcement in Illinois
skytrekker
10-20-2006, 10:41 PM
I've been frightened lately by laser warnings going through some of the
I-Pass arches. Sure enough, they have begun mounting lidar on the arches pointed at you as you enter the arch. They're mounted ahead of the cameras and lights that are aimed at your rear end as you leave the arch. Some arches have them, some don't. I've only recently been getting warnings. So it's new. So I wonder if this is used for traffic info or is it going to be used in conjunction with the I-Pass system in photo speed enforcement. If so, I'm getting my $10 deposit back.
worldpower
10-21-2006, 08:47 AM
I also always thought that on eday they might use the information from your ipass to catch you on speeding,like if i have special plate that cant be read by camera,i will still be cuaght because of the ipass signal info, someone needs to find what exactly is going because i will want my deposit back too. :evil:
never heard laser speed camera in IL, however they DO have photoradar vans and use them around toll passes. I'm wondering what frequency they use and how much warning I will get. The state currently have 3 of them so they might be hard to spot but I wish somebody would know more about this issue
worldpower
10-27-2006, 10:49 AM
never heard laser speed camera in IL, however they DO have photoradar vans and use them around toll passes. I'm wondering what frequency they use and how much warning I will get. The state currently have 3 of them so they might be hard to spot but I wish somebody would know more about this issue ive passes by a few vans they work on K band and are very easy to detect
worldpower
10-28-2006, 02:19 PM
I got a laser warning to day going through the i pass! I went throught going 80mph so ill update you if i get something in the mail cause it seems like they would not need to read the plates they just need your ipass info
richardboy316
10-29-2006, 07:09 PM
got a laser warning going thorugh ipass tonight..pretty solid for like a few seconds before and then just 1 or 2 after..also was getting k band because they have a k-band speed sign telling you your speed next to the regular tolls
this was on 294 heading away from o-hare
worldpower
10-30-2006, 05:52 PM
got a laser warning going thorugh ipass tonight..pretty solid for like a few seconds before and then just 1 or 2 after..also was getting k band because they have a k-band speed sign telling you your speed next to the regular tolls
this was on 294 heading away from o-hare
were you speeding when you went through the ipass?
kpatz
10-30-2006, 06:42 PM
Some automated toll booth sensing equipment used in IPass/EZPass/etc. use laser for a number of possible reasons. It could be sensing speed, or size of vehicle (to determine the existence of a trailer), number of axles, or what have you.
The EZPass booths in NH cause laser alerts on both my RDs. Experimentation has determined that the source is overhead, coming from the ceiling of the booth. This rules out speed measurement as a likely use for the signal.
richardboy316
10-30-2006, 07:44 PM
got a laser warning going thorugh ipass tonight..pretty solid for like a few seconds before and then just 1 or 2 after..also was getting k band because they have a k-band speed sign telling you your speed next to the regular tolls
this was on 294 heading away from o-hare
were you speeding when you went through the ipass?
no
and to kpatz
ive been though before and no laser..its got to be new
skytrekker
10-30-2006, 07:58 PM
Yes, this is a disturbing finding. The thing is, it has been introduced just recently on I-Pass arches that have been up for quite some time. And I'm noticing more additions in recent weeks. They are not to detect the presence of a vehicle. They use a more reliable method with the tried-and-true inductive coils in the concrete - same as used as detecting vehicles at controlled intersections/traffic lights. I-pass express lanes have been without laser for some time, so I would assume that they are not necessary for toll operation.
So it is definitely being used for speed measurement. My bet is that it's just for traffic info. If they were to issue tickets, you'd be able to set up a lawn chair and TV in the I-Pass lanes and watch the game in peace.
worldpower
10-31-2006, 01:23 PM
When i did get a laser warning i was speeding but when i go the right speed i dont get it, there has to be some kind of info on this or do you guys think their keeping it secret? If anyone finds official info about it please post.
richardboy316
11-09-2006, 01:49 AM
Proof
http://youtube.com/watch?v=-5laUsbGS2A
http://youtube.com/watch?v=X8WMS5IsL9M
I wasn't speeding either
By deerfield road on I-94
nomore55
11-09-2006, 08:04 AM
The EZPass booths in NH cause laser alerts on both my RDs. Experimentation has determined that the source is overhead, coming from the ceiling of the booth. This rules out speed measurement as a likely use for the signal.
Same here. I get "false" alerts everytime I pass thru. I don't think it's being used for speed enforcement.
OTOH, when are they going to start using the data collected (time elapsed to cover a known distance) to mail drivers speeding tickets. That's a serious issue. :oops:
kpatz
11-09-2006, 09:10 AM
OTOH, when are they going to start using the data collected (time elapsed to cover a known distance) to mail drivers speeding tickets. That's a serious issue. :oops:That's unlikely to happen in NH, since our turnpikes don't use booths on both entry and exit like the Mass Pike does, and each turnpike has only one point where a toll is required in either direction (unlike the Garden State Parkway in NJ where there's a toll every 5-10 miles or so).
The only way they could get a speed that way (in NH) is if you pass through more than one booth, such as the Hooksett tolls, and then the Bedford tolls. One could take alternate routes to avoid one or both of these tolls, or jump off at a rest area in between for a few minutes to "cool down".
AWD_rules3830
11-09-2006, 05:00 PM
I think the laser is used for a proximity alarm; it inform whatever a car is coming, not speed enforcement.
most likely to trigger flash camera if you don't have the i-pass card
worldpower
11-12-2006, 10:54 AM
most likely to trigger flash camera if you don't have the i-pass card
dont think so cause ive gone through the ipass dozens of time without an ipass with my license plates covered and i dont get a signal, the only time i get it is when i go 80mph through there
fresha97
11-16-2006, 01:34 AM
I've been frightened lately by laser warnings going through some of the
I-Pass arches. Sure enough, they have begun mounting lidar on the arches pointed at you as you enter the arch. They're mounted ahead of the cameras and lights that are aimed at your rear end as you leave the arch. Some arches have them, some don't. I've only recently been getting warnings. So it's new. So I wonder if this is used for traffic info or is it going to be used in conjunction with the I-Pass system in photo speed enforcement. If so, I'm getting my $10 deposit back.
I'm not sure but I remembered that I saw about this on the I-pass Web site..Actually I tried to find where the thread is..
I remember..that first time, you just got warning.....
I'm sorry I did not find where it is..But..I think..somewhere in the I-Pass web page..you can find about that information..
cell21633
11-16-2006, 03:12 PM
Can I use my I-PASS transponder while towing a boat or camper this summer?
You can use the ORT lanes with your regular I-PASS transponder if you drive an RV or tow a trailer, camper, or boat! You no longer have to wait in line at the cash plaza or purchase a special transponder if Open Road Tolling lanes are available. The new technology in these lanes will calculate and deduct the appropriate toll from your I-PASS account.
i would assume the laser we're encountering is somehow used for detecting what type of vehicle you are driving
kpatz
11-16-2006, 03:15 PM
i would assume the laser we're encountering is somehow used for detecting what type of vehicle you are drivingThat's probably what the laser in the EZPass lanes in NH do. The website says the same thing... if you're towing a trailer, it will calculate the toll charges automatically.
worldpower
11-21-2006, 02:04 PM
funny thing about this is that i only got a laser warning when i flew by there at 80mph
worldpower
11-27-2006, 10:11 PM
ok forget about my last post because this time i was going 55 when the laser warning was going off, but there was also other cars flying by at about 80, ill try and get some more info
skytrekker
12-11-2006, 10:59 PM
You have to remember that, for the longest time, the I-pass arches didn't have the LIDAR guns. Vehicle detection is done by inductive coil loops in the pavement - provides better accuracy for precise vehicle detection and location. Also, Laser has no way of knowing what type of vehicle you're driving - it just measures speed. But, like I said before, it's probably just part of the information network used for traffic monitoring. It's just a bit scary since it "could" be used in conjunction with the cameras already there. But, Rod promised to screw us all by ensuring tolls will be here forever. So who knows what evil the toll authority is capable of.