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Police and Lawyers Love E-ZPass
John_Schmidt writes "The AP is reporting that police are using EZ-Pass records to solve crimes. Lawyers are also getting the records to use in divorce cases. The article also mentions that the NYS Thruway has sensors to read the cards along the highway (not just at toll booths) but says the data is scrambled and not stored."
How soon before:
You passed between milepost 1 and 15 in under 6 minutes, here's your speeding ticket.
Let's just get those RFID tags injected into our necks and get this over with. It is inevitable.
"No matter where you go, there you are." -- Buckaroo Banzai
Do you sign a contract that states your usage of the EZ-Pass will not be tracked/used/etc...? Probably not, so if you allow yourself to be tracked and are doing illegal/illicit activities, it boils down to you aren't smart enough to be a good criminal...
...we are from the government - we are here to help...
Send me your EZ-pass and $5, I'll put in a small push-button switch. Only activate it when you're not out doing illegal things :-)
This could work both ways. Give your EZ pass to your buddy(or clone it and attach it someone's car) and send them on their way.
STOP ROCK VIDEO
ALERT ALERT!!!! This is even worse than having to have a LICENSE PLATE! I don't want anyone else, (LET ALONE POLICE!) knowing who I am.
Convenience? Privacy?
Convenience? Privacy?
Decisions, decisions.
I will shortly be selling a kit that allows you to clone an EZ-pass card through my regular channels (read: guys in the states who advertise in the back of magazines sell COD) for selling cable descramblers. My hand held tag reader, concealable as a road side rock with a battery that lasts 3 days, is priced out the range of causual snoopers -- but some reporters have already used to collect the tag ids of a number of celebraties and politicians and start monitoring them.
No problem at all for me, my EZPass literally saves me hours a week since I'm on the NJ Turnpike regularly.
If I was planning on doing something seriously illegal, I'd just ditch the tag first. The cops who got caught claiming false overtime deserved it, not because they did wrong, but because they were stupid enough to think they weren't leaving an auditable trail behind them.
FIVI used to work for a home contractor in the NYC suburbs. We crossed the Hudson river every day over the Tappan Zee bridge, and used EZ-Pass to pay the tolls. (Those out of the area, please be patient.) Now, contractors are notorious for taking cash payments whenever possible, and how much of this income they report in taxes is no doubt a small fraction.
So, what happens when any one of these contractors, or businessmen in similar circumstances, has their tax returns audited? How long will it be until EZ-Pass and other similar systems are used to "establish a pattern": meaning, evidence that you do business every day of the year, even though you report your income as seasonal, occasional or whatever?
And that's just taxes!!!
We're being watched, and the full implications of this are scary.
New York businessman Solomon Friedman ... Anyone with technical savvy, he said, could track radio signals from the cards. He designed a pouch a driver can store the card in, blocking the signal when not in the toll lane.
Dipshit didn't design it, you get one of those from E-Z Pass when you get your tag. Maybe he made one that looks a little less like an anti-static bag that a computer component would come in, bu it's not original.
--You will rephrase your request for me to go to hell. Goto statements are not acceptable programming constructs
Don't forget that other tracking device that we all carry, cell phones. It's constantly transmitting while powered on. Right now, the phone company only logs your location by cell site, a radius of many miles. Police could still find someone by triangulating their signal with specialized (meaning expensive) equipment, but E911 changes all that. They'll be required to pinpoint the location of any caller by 50-100 meters.
Here in California, we have FasTrak. They already acknowledge that they use sensors on the road to determine traffic conditions. They also said that you can opt-out of this. They even supply the mylar bags so that you don't get tracked this way. They sent out a letter informing users of this earlier this year and even sent an additional mylar bag.
The FAQ for Fastrak mentions the mylar bags in relation to carpool lanes. Same principle for traffic conditions.
An awful lot of tollbooths also have license plate cameras, so who needs EZpass? Maybe they're just going to analog video recordings for now, but one assumes the license plate images are easy to OCR and that can be done in real time soon enough. I'm sure I could easily do it with a webcam. Of course once all tires have RFID, then every magnetic traffic light sensor and parking meter can have RFID readers built in.
It's possible to do this on a voluntary basis. For instance, I heard of a car rental agency that gave a big discount if you'd use a GPS that would alert them to excessive speeding. Coercion or good business? I could imagine a setup where insurance companies give people money off if they go along with this, and many might be willing to make that tradeoff.
Mencken had it right. So glad that's old news.
The Houston area version is called EZ-Tag. In addition to the "go through the toll booths" quickly aspect, data is fed into the Houston TranStar system along most of the major freeways.
The TranStar site is great because you can easily get an idea of traffic conditions before leaving your home/office. Interesting data includes historical speed graphs.
The automatic garage doors at our office building can also be set up to read the EZ-Tag and automatically open the doors when we pull up.
Comment removed based on user account deletion
One Pass To rule them all
One Pass to find them
One Pass to bring them all
And in the darkness, bind them
Thank you, Sir Rudy Giuliani, former NYC prosecutor, for pushing the E-Z Pass on us when you were NYC mayor, yapping about "court orders" and "due process" for access to the data. Now you can see all the motorists on the East Coast shining in your Palantir.
--
make install -not war
Someone builds their own EZ-Pass readers for fun and profit. I'd assume anyone with RFID engineering knowledge could find out what frequency the tag operates on, either by bringing some kind of radio monitor to an EZ-Pass booth or by taking the tag apart. Each TAG should send a unique response, encrypted or not. It could for example be used by high schools to make sure kids don't leave, for one thing. I'm sure the rest of the slashdot crowd could come up with plenty more big brother like scenarios.
In the last couple of years, there has been a greater push to get "tough on crime" (or appear so, but we won't split hairs here, will we?) which basically means "put more people in prison than we did last year"
/shrug
Because of this push and the fact that various law enforcement / "civil defense" agencies aren't really "up with the times" (sheer incompetence and the apparant inability to convict someone in a "regular court" might be a better way of stating this), in order to keep up - these same folks HAVE to turn to technology and to to push through poorly written legislation (or interpret it in interesting ways)in order to make their "quota".
Dunno, I probably have no credibility, but my belief that law enforcement is embracing all these new things is not because they are new, but they are too incompetent to keep up their statistics using traditional means.
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With EZPass, you don't have the option to pay cash and remain anonymous - you MUST be linked to thing even though there's no good reason for this to be the ONLY option. I can understand that some people don't give a shit about privacy and want to billed, but I'm guessing that there's a LOT of people out there just like me (in the cashonly lane) who would rather prepay in cash and be left alone.
I'm wondering if it would be illegal to setup a EZPass proxy organization?
--
Power to the Peaceful
In Houston, Texas, the highway department has placed transponders all over the highway system... not just on the tollways, but on the freeways as well. This data is used to create very cool real-time maps of traffic conditions.
Since the transponders are compatible with other Amtech/TransCore systems, even vehicles from Oklahoma, Dallas, and other cities help keep the map up to date. In fact, the Dallas and Houston tollway systems are now interconnected -- the same tag will let you cruise through both systems.
Of course, the privacy implications of this convenience have been obvious from the beginning. If you have the need or desire for true anonymity, though, you're not in the market for a (non-disposable) cell phone or a TollTag anyway.
Stressed? Me? Of course not. Stress is what a rubber band feels before it breaks, silly.
If you're going someplace you don't want recorded, put the freeway pass into the trunk. Duh.
--- Ban humanity.
There could be advertisements personalized to our name and consumer characteristics triggered by RFIDs. Just like in Minority Report. Although they used biometrics rather than RFIDs.
Select the 85 percentile of that for the speed limit.
Enter politics, so write down 55 or 65 no matter how safe the road is.
Oh, and the standards used for road speed is still 1950's vehicles on skinny tires, no matter that even cheap cars have anti-lock brakes.
So yes, if speed limits had ANYTHING to do with what the roads could bear, perhaps we're respect the signs. Again: if the laws were based on reason (*cough*), they'd be respected. When speed limits are imposed because to raise ticket money, then it's wrong and the authoritive gov't needs to be kicked in the knees for it.
And instead of the police enforcing safe driving by ticketing people cruising along in the leftmost lane without passing anyone, or for lane changes without signals, or for eating/phoning while driving taking important attention away from piloting a 3000lb SUV at 90 feet per second...
No, they'll enforce "speeding laws" only.
Clearly, when I'm on a Calif Superhighway with few people on it - a road that's larger and its in better shape than parts of the autobahn I've seen - clearly, it's only safe for 65 when going 110 on the autobahn was almost dangerously slow. Because a sign says so.
Give me a driving test that 40% of the people fail the first time they try it, give me road that you have to have the "proven able" license to drive and I'll go for it.
RE: EZ Pass? It's in a lead bag (for film) in the glove box when I'm not going through a toll booth.
After our officials "promised" and swore up and down it would only be used for tolls, NJ and NY authorities have been caught MANY times abusing this.
Ready for your implanted RFID yet sir?
Bend over now
The parent may have an extra dose of soma for his obedience.
EZPass uses RFID -- Radio Frequency Identification. The point is you're still being tagged unless you put it in an anti static bag or farraday cage. Your trick blocks any cameras from taking pictures of your EZ Pass, yes, but don't you think the cameras at many toll booths grab your license plate as well?
IBM has been running a commercial recently with three 'tech guys' discussing an EZ pass with two of them implying to the third that he's a fool for not having the pass. Whereas my reaction has always been that he's the smart one for not submitting to having his every trip filed in a database.
The potato it is uninformed.
They stamped the date and times on the paper toll tickets for the Pennsylvania Turnpike. When you exited the turnpike, they compared your exit timestamp with the entry timestamp you received when you entered the turnpike. They had a pre-printed table of elapsed times to translate into average miles-per-hour. If you arrived at the exit too soon, you automatically got a speeding violation. My dad narrowly avoided getting a ticket by being less than one minute short of the violation time. He did not tell the toll booth operator that we had stopped along the way at a roadside park and had a picnic lunch too :-)
This is simply incorrect. First of all, black box recorders for cars are still experimental. They are not sold in any new cars today (unless you read something in the latest Autoweek, which has not made its way to my door yet).
The only vehicles that have a GPS which sends a signal when the airbad is deployed are cars equipped with OnStar (on GM cars, Mercedes Benz uses a different system run by a company in Texas whose name I cannot remember right now). This is an optional pay service -- you don't have it unless you pay for the service.
Every car sold today in the US it required to have airbags. They are not, however, required to have a GPS device or an onstar-type system. Car manufactureres are extremely cost-sensitive. They don't just drop $300 systems into cars without telling anyone about it (there are a few exceptions, but this is not one of them). I'm not sure where you're getting your information on this one, but it is simply untrue.
-Turkey
Not soon enough, IMHO. Imagine how many countless lives could be saved by using this technology to get wreckless assholes who can't drive safely off the road.
But they're wreckless! Obviously they can drive safely if they haven't had a wreck!
I think it's actually pointless to argue too much about EZ-Pass being tracked. As soon as its potential use in court becomes obvious, the states will just start including RFID tags embedded in license plates. I don't think *that* will be an opt-out situation...
If you keep a daily routine & use the EZ Pass on your way to & from work, you would incriminate yourself if you didn't use the card, say, on the way home the same day someone in your office was murdered after hours. It would be circumstantial evidence, but nonetheless it would give the police cause to put your life under a microscope.
I think there may have been a Law & Order episode that revolved around this idea.
Don't do anything wrong. Then you won't have to worry about the police tracking you.
That's remarkably naive. If politicians stopped making everything I'm currently doing illegal in a vain attempt to be seen to be doing something, or if police weren't so blindly zealous in their enforcement of laws that the public they are their to serve and protect doesn't want, then *maybe* I would have less to worry about. As it is however, if I change nothing in my behaviour, I'm fairly certain I would be arrested within 5 years - despite not breaking the laws of today.
It's the old story... make everyone a criminal, then you can detain anyone you want.
Forget thrust, drag, lift and weight. Airplanes fly because of money.
I remember attending a series of lectures on sensor technology given by a professor from rtgers university, and one of points he made on the topic of these RF based toll booths in NJ was that given the cost of installation and maintainence it would have been substantially cheaper to PAY motorists a few dollars each time to use the road and not install the system at all!
These EZ-passes are very weak transmitters. I'm not sure how they work exactly, but they might even be passive ones where they take the energy from outside and retransmit using that.
In any case, a cell phone requires the ability for the cell tower to hear you from a few miles away. The EZ-pass works in a couple dozen feet.
-
Ok, so we've got a holy book and really funny dress.
My CowboyNeal, we've got a full blown religion on our hands.
(Oh great I'm surely going to goatse.cx for this.)
Every Toyota has a GPS unit? Do you have any reference for that information? I am reasonably sure you are incorrect and that you are the one spreading FUD.
I don't know about Toyota, but this is NOT true for EVERY GM car currently being sold. It is true for SOME GM cars currently being sold, namely, those with the OnStar systems. OnStar or not, GM cars (and I think most brands) have a SRS (supplemental restraint system) module that constantly records the last several seconds of mechanical events such as speed, brake application, etc. This data is "frozen" when the airbags are deployed (assuming the SRS module survives, but it'd have to be a pretty bad crash for it not too). But your location is NOT recorded by these events. This info is from a good friend who used to do collision repair at a Chevrolet dealer until last year, and now he teaches the subject at a trade school. We've had discussions on this very subject before...he has a 2002 Chevy pickup with OnStar, and the GPS unit in his truck is a plastic blob by the rear-view mirror.
(or they'd make political hay from mandating a no-evil-uses-with-EZPass policy, but this is Slashdot, so we all just assume a police state is inevitable, right?)
Ahh yes, our dear Slashdot, where tinfoil is headwear and 1984 is the bible.
Rent a clue.
People organize and strive to obtain more control over their environment. That tendency includes both governments obtaining more control over their citizens/subjects and citizens/subjects defending themselves against such control.
But institutional groups (such as governments) tend to go on for a long time, accumulating ever more power, while individuals are replaced from time to time. So if nothing is done about it the tendency will be for governments to accumulate ever more power, and become ever more oppressive, until they become so tyrannical that they're attacked from within and/or without and eventually overthrown (which may end up with an even worse situation).
The founders of this country recognized that tendency of government to accumulate ever more power. They prescribed a system of institutional restraints. But, because the government would eventual work its way around it, they ALSO prescribed ongoing watchfulness by the citizenry, so they can use NON-violent means to back the government off before it goes so far that only violent means will work. "Eternal Vigilance is the price of Liberty."
Which is EXACTLY what is going on now: New tech makes for new opportunity for spying and oppression. The government starts using it because there's no specific rule against it and it helps them "do their jobs". Eventually the citizens catch on and raise a ruckus. Sometimes this ruckus results in the creation of specific rules to suppress the misuse and restore the status quo ante (or even improve on it).
Slashdot is all about new uses of technology. "News for Nerds, Stuff that Matters." And what matters more than government misuse of new tech to oppress the citizens?
So of COURSE it shows up here. Of COURSE it makes up a significant fraction of the news items. Anybody can post, but ordinary citizens greatly outnumber the elite controllers. So of COURSE the bulk of the voices are against the new misuses of technology.
No tinfoil hats required.
This is a very healthy process. It's exactly what the founders of the country prescribed, to keep the country from developing into a tyranny and prosperity from degenerating into civil war.
Ridiculing the people criticizing the government's misuse of technology is NOT "conducive to these ends". But it does tell us something about the ridiculer:
Either he's a fool -
or he's on the wrong side.
Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
You seem so sure of your info, and yet a quick Google for 'automotive "black boxes"' show that you are the one who is incorrect. In fact, not only are the black-boxes already deployed, they have already been used against people in court. They are not yet required by law, but they are out there and in growing numbers.
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http://privacynotes.com/EDR_Automotive/
http://www.thebostonchannel.com/automotive/2029
http://www.philly.com/mld/inquirer/news/front/3
http://www.seniormag.com/headlines/blackboxcars
"Gold still represents the ultimate form of payment in the world." - Alan Greenspan, 1999
Why do they insist on this devices being registered and what not? Why can't I anonymously buy and/or recharge it at a gas station? If it can be done with cell phones, it is certainly possible with these -- much simpler -- devices.
I suspect, it is so by design. We are dealing with the government, after all...
In Soviet Washington the swamp drains you.
But why use these transponders which have to read unique EZPass numbers, when all they need is little pressure strips in the road, like at red lights, which would be much, much cheaper, and of course the privacy concerns would be greatly diminished?
I would put it to you, dear reader, that this transponder issue is dodgey. Here in Melbourne we have web based traffic maps, and signs on the road to say how many minutes until such and such exit, and it's all done very well and accuratly without the need for transponders or uniquly identifying each vehicle.
In fact, thinking it through a little further, if the ostensible purpose of this system is traffic management, why on earth would you *want* unique information? Surley you would be more interesed in aggeragate statistics...
Just doesn't work that way. First, the OnStar GPS tracks position only - there is no geographic data until the coordinates are uploaded to Onstar's service center. And, the car doesn't have some sort of telemetry system that's constantly broadcasting information - the connection is through the AMPS cellular network, which is god-awful expensive to use and takes around 10 seconds just to send through the coordinates.
With the purchase of a Caddy, you get the premium service for free for the first year (other cars get basic service). So, if you touch the blue button, you'll get a rep, and they'll likely offer to help. But you need a tinfoil hat if you think that someone's constantly watching you drive around to see if you're lost.
Like voter registration and driver's license records being sold to marketers.
Like data that the driver wasn't told existed being pried from OBD II vehicle computers.
Like telemarketers scanning entire phone books for target lists.
Like phone-sex and psychic lines nabbing your home phone number through their ANI service.
Like HTML "web bugs" embedded in email messages.
Like bars and clubs reading your ID, then secretly entering the info into a database.
The E-Z Pass comes with a mylar/metallic bag (looks like a typical anti-static bag) in which you can place the unit if you don't want it to be detected (e.g., if you elect to pay cash at the toll booth you won't be charged on your EZ Pass account). That's why I just place it on the dash when I go through a toll, then I put it away.
Research shows that 67% of those who use the term "research shows", are just making shit up.
The above quote comes from the Bank of Canada's website has a FAQ on the use of currency and what you use and how you use banknotes to pay debt.
Does the vendor/retailer have to accept banknotes or coins. Not really, and I suspect that the law is probably the same in the US since the majority of this law is common or case law. An exception is The Currency Act which sets out limits on a tender of payment in coin. The specific limits can be seen at the above site."
They have no problem using their cell phones, have blogs, PDA's, WiFi, and all sorts of other goodies. As if all those are real private and not giving off anything.
There is a bit of a difference. Who I talk to, what I think, what websites I visit and what games I play on my Visor don't make much evidence that can be used to falsely implicate me in a crime.
Where I am, can be! Before you start talking about how far fetched it is, I'll tell you that I was threatened by a cop once with precisely that. Sgt. CJ Hartman, formerly of the North Versailles PA police department threatened to do just that.
I will do everything I can to prevent men like him from having access to data that can prove that I was within 10 miles of a place where some crime was committed.
LK
"Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
"most recorders store only limited information on speed, seat-belt use, physical forces, brakes and other factors."
"gives critical data about speed, breaking and seat belt use."
"Generally, all newer cars with air bags are equipped with modules that determine when the bags are deployed."
and, the piece de resistance, from your last link:
Gosh, no GPS. Funny thing. Ya don't suppose those boxes might NOT have been meant for Keeping The Man On Top(TM)?
Gosh, it's unthinkable. Quick, put the tinfoil hat back on. They's a-coming.
The opinions stated herein do not necessarily represent those of anybody at all. Deal with it.
"There is no way to rule innocent men. The only power any government has is the power to track down criminials. Well, when there aren't enough criminals, one makes them. One declares so things to be a crime that it is impossible to live without breaking any laws."
-- Ayn Rand, "Atlas Shrugged"
When modding "Informative", please make sure it both has a source and IS actually informative.
Like you keep your nose clean? Have you ever:
All of these things are illegal (at least in my country). This does not mean they are wrong. 'Just don't do anything wrong' is a very broad statement, and does not solve the bigger problem of getting fair laws. In fact, it was illegal in my country (South Africa) to have sex with a person of a different race or the same sex, to speak against the government was not illegal but often punished. If everyone had taken your view, we would still be in the old apartheid era. That Mandela dude was just a troublemaker -- he just 'shouldn't have done anything wrong'.
OK, now I'm entering rant mode. America itself was founded on lawbreaking. The Boston tea party? I could go on, but I suppose I should have ignored you. The problem is that the laws aren't always fair, meaning that not everything 'against the law' is 'wrong' (and vice versa). Think about that.
Languages aren't inherently fast -- implementations are efficient
I lived in NJ through driving age. Now I live in PA.
As a child, I heard complaints about how the tolls did not disappear after the roads were paid off. When I moved to PA, I learned that having somebody pump your gas was to cut down unemployment, not somehow a safety issue. I also heard that the toll systems kept people employed.
I was poor in both states. I know all the roads to use to avoid the tolls, but they are much slower. Now my time is worth more than the tolls, but a decade ago I often took the back roads to avoid tolls.
NJ is willing to implement EZ-Pass because it allows them to keep the tolls while disrupting the driving less. Obviously the tolls are important revenue. Also obvious is that they are using EZ-Pass for the convenience. They even moved the toll at the Delaware bridge to make the untolled exit easier, and to build a fast lane for EZ-Pass users.
PA does not have an untolled exit; you must give PA money to use the Delaware bridge. PA is also building new exits on the Turnpike that only accept EZ-Pass. There was a rumor that EZ-Pass would only pay for itself if enough people ran the tolls and were fined. Then it was rumored that enough people were not doing it. Now PA is making it impossible to exit without EZ-Pass. And if you think that signs make anything obvious, you have never driven in PA. (I made a wrong turn today because the signs said the left lane turns left and the right lane turns right. The road did continue straight, but I think you had to drive between the lanes to stay on it.)
People like tolls and taxes on gas because they believe that the revenues are collected from the people who benefit from their use. They need to feel this money is used for the roads. If it was announced that toll money was going to be used for education, people would revolt.
If you wonder what NJ does with the money, try driving in PA. The roads are awful compared to NJ. I saw NJ repave about 40 miles of the Parkway over a weekend, one lane per day. PA cannot repave 20 miles of a highway in less than 2 weeks. It took PennDot 6 months with one lane closed at all times to "widen" a 2-lane highway to 2 lanes with better shoulders. Part of this may be because NJ uses blacktop and PA roads are typically concrete. Part of it may be because PennDOT is a very unorganized and/or corrupt department.
NJ roads are some of the best I have seen. A report in the 80s listed the Garden State Parkway as the safest road in the US, and I wondered how it could be when it was usually 70mph bumper-to-bumper traffic. A factor is that in NJ you always move right when a faster car is coming behind you. NJ drivers keep moving in heavy traffic; it takes an accident, bad weather, or a patrol car to get them to slow down (a little.)
PA has some of the worst roads I have seen. PA passed a "stay right" law recently, but no one noticed. The left lane of most 2 lane roads often moves slower than the right lane. And when it is bumper-to-bumper in PA, everybody slows down to 20mph and stops erratically. This may be necessary to avoid all the potholes.
In NJ, I worried that salt from the ocean and the weather would ruin my cars. In PA, I worry that the roads and the potholes are going to shake my cars apart. (Do you plan to have a flat tire at least once per year?)
Some factors for the difference in road quality:
- NJ is a richer state with a denser population. - The tolls contribute to road upkeep, and...
- NJ has 2 toll roads that cross the state in different directions, while PA only has one and it misses most of the state. (Not that you'd want to go there.)
- NJ just cares more about roads, and has a DOT that works.
---
Side note: I refuse to get EZ-Pass, even though driving to my best client almost requires the PA Turnpike, because I believe the issues in this article are inevitable. I don't have a tinfoil hat, but why make it easy for them? (And I drive sports cars that get lower mpg when under 70mph.)
I spend my life entertaining my brain.
Automated speed limit enforcement contributes to the second goal but not to the first. If anything, speed cameras (for example) catch speeders objectively regardless of their appearance.
I consider my driving habits private
Interesting, as driving is done in a public place.
While you are 100% correct about signalling, you are dead wrong about being hit from behind. In every state I've lived in, if you hit someone from behind, regardless of what they were doing, you are at fault. You need to be able to stop, which in most cases means STOP TAILGATING. Sure there are plenty of stupid things people do, but the law says you need to be prepared to stop if necessary.
-------
"Every artist is a cannibal, every poet is a thief."
The E-Z Pass card happens to be just yet another RF ID tag. Place the tag behind a metal shield and the thing won't work. Put it in a metalized anti-static bag (Instant Faraday Cage...) and it worn't work. So, how would the EZ Pass readers see a tag through large metallic objects, hm?
How are they perfect? EZ Pass works by placing a tag in the windshield or front bumper of the vehicle in question. Better yet, how would they "jam" the signal. Jamming implies emitting interfering RF energy- the trucks might shield the signal coming from the reader if the tag's not in the proper place (windshield or bumper), but that's not the same thing and isn't really applicable in this context.
Okay, what "speeding sensors"? It doesn't take special sensors or rocket science to determine that someone was speeding by computing the time it should take from one reader point to another and then determining how long the tag took (by way of being on the vehicle) to go from one read point to another. Shorter times implies speeding at or above a given average speed at some point on the trip.
I am not merely a "consumer" or a "taxpayer". I am a Citizen of the State of Texas