Using Cell Phones to Track Traffic 246
msh210 writes "The AP has reported (with additional information from KMOX-AM) that the Missouri Dept. of Transportation will be teaming up with a private company to track in-use cell phones on Missouri highways and state roads in an effort to monitor traffic flow. Individual information will not be stored, they say -- only the aggregate will be studied, using "sophisticated" math. (See also findlaw.com's commentary on privacy concerns. "
Better idea (Score:5, Funny)
Re:Better idea (Score:2, Insightful)
Does no one else notice this? Stories about some small niche thing with limited interest gets posted once, and only once. Anything that engenders comments mentioning A: Big Brother, B: Bush/Repubs or Democrats or C: Europe/Asia/America/France (especially france) sucking get posted again and again. Because guess what, eve
Re:Better idea (Score:3, Funny)
what? (Score:5, Insightful)
is it just me, or does this sound like a complete waste of money? privacy concerns aside (i'm not convinced there are any), what will this accomplish that video cameras don't already do?
so we'll use mobile phone signals to monitor traffic? seems heaps less efficient that actually looking at real traffic volume...
Re:what? (Score:3, Informative)
Re:what? (Score:4, Insightful)
Re:what? (Score:2)
You'd probably need to reevaluate it each year or after any laws go into effect that could effect the rate (such as laws saying you can't talk on a cell phone while driving - either in Missouri or in a neighboring state.)
Re:what? (Score:2)
It isn't the number of cell phones, it is how fast they move from cell to cell -- thus telling you the speed that traffic is moving on that section of highway. Estimating the number of cars and trucks in the traffic jam is an exercise left up to the reader.
Re:what? (Score:4, Insightful)
Re:what? (Score:2)
I am fairly sure that the mix of cars, trucks, busses, etc is more or less constant during the workweek and probably different on weekends and holidays. Similarly, I am also fairly certain that the percentage of riders with turned on cellphones is also more or less constant. So... I count the number of cellphones in the area and can calculate the speed they are traveling and I can get fully automated real-time traffic data.
A cellp
Important statistic (Score:2)
But the statistic that's most relevant to traffic is the number of drivers who are yakking on their cell phones. Good drivers are less likely to be responsible for traffic problems. ;)
Yeah, I know - in theory it's possible that the people using the cell phones aren't driving. But, what percentage of the time have you seen someone on the cell phone in a car who is not driving that car? That, and the unfortunate fact that most cars are carrying only the driver. :(
Re: (Score:2)
Re:what? (Score:3)
Re:what? (Score:3, Informative)
From TFA:
Although most new cell phones come equipped with Global Positioning System capabilities that can pinpoint their locations, the tracking technology used for transportation agencies does not depend on that. Instead, it takes the frequent signals that wireless phones send to towers and follows the movement of the phones from one tower to another. Then it overlays that data with highway maps to determine where the phones are and how fast they are moving. Lumping th
Re:what? (Score:2)
This is simply unnecessary.
Re:what? (Score:2)
Re:what?-Under pressure. (Score:2, Insightful)
Re:what?-Under pressure. (Score:2)
The only traffic info I've ever seen given to drivers is via the radio...from helicopter reports, and that's only during rush hour...
What is the need at all for all the cameras and tracking?
I can see that traffic data over time might be useful for city planning and all...seeing where roads need to be widened and such....but, why is it needed in such detail in real time?
Re:what?-Under pressure. (Score:2)
While a cellphone counter might not be the best route, having a system to provide realtime traffic info is definately a good idea. The strategy would be to place some sort of automated realtime traffic sesnor around all of the major and secondary routes. This reduces dependency on choppers that might not go everywhere or people kind eno
Re:what?-Under pressure. (Score:2)
The aviation world already has real time satellite broadcast weather and other updates.
Re:what?-Under pressure. (Score:2)
Re:what?-Under pressure. (Score:2, Interesting)
I use the real time data every morning to determine whether i take i90 to the office, or i290. I use whichever is the least congested, and or change the time i leave for work. This is one of the main uses of the data i can think of.
Another is from the traffic data they can usually determine there was an accident before it has even beeen reported, and use the ca
Re:what? (Score:2)
There are, but somebody has to pay to purchase and install such equipment. Monitoring cell phone use on a busy highway is cheaper, the equipment already exists wherever there are cell phone networks.
Re:what? (Score:2)
A traffic camera also has a limited scope and would cost more to run a series of cameras to provide continuous coverage along a single stretch of road. Presumably, if there's cellphone coverage in a given area, there could be traffic monitoring with no need to deploy extra hardware and technicians.
So from a procurement and deployement angle, this could actually save money and pro
Re:what? (Score:4, Informative)
http://www.mddailyrecord.com/pub/5_398_friday/bus
MMTIS uses the movement between towers, without collecting personal information, and uses that data to determine speed and movement in specific areas.
Re:what? (Score:3, Insightful)
Re:what? (Score:2)
Re:what? (Score:3, Insightful)
Really. Would you like a personally assigned police officer to trail you around 100% of the time you aren't in your house or on your lawn, taking notes on what you are doing? Once pervasive enough, remote surveillance accomplishes the same exact thing. A velvet cage is still a cage.
Re:what? (Score:2)
Its still better than sleeping in the iron one.
cellphones WAY less expensive (Score:3, Informative)
With modern cellphones reporting GPS coordinates, you get computer-measured flow data from the roadways. This is where a program can ac
Re:what? (Score:2)
None of this is for monitoring traffic volume. It is for monitoring speed and density (or flow). The available technology for evaluating speed and density from video cameras is extremely poor. I've been testing this stuff since 1995 and it is totally unreliable. Right now, the best point source of speed and density is radar scanners by a company called wavetronix [wavetronix.com]. The biggest drawback, however, to both these and video monitoring is that both are expensive to deploy, require extensive communications in
How about using "search" to track dupes? (Score:4, Informative)
Re:How about using "search" to track dupes? (Score:2)
I know there are two camps about dupes. One is a little more benevolent, "Yeah, they do it, we know it, but that is pretty much OK". The other is, "Why don't the people who run this site know their content or are to dumb or lazy to do a simple search like the one above?"
I fall in the later category. The slashdot guys might actually be that dumb or lazy to know how to use google. If thats the case,
I'll save them some money (Score:5, Funny)
Re:I'll save them some money (Score:3, Insightful)
That being said, I do see some uses for this. I can't count the number of times I've seen the 70 backed up in rural Missouri because of accidents. Maybe it's not that much use in the city of Saint Louis, but it might be worthwhile in, say, Montgomery or Callaway counties which the 70 runs through.
Re:I'll save them some money (Score:2)
Re:I'll save them some money (Score:2)
I don't condone speeding. I don't do it myself most of the time. But it's NOT that unsafe to do the limit in the rain as long as you have working headlights, wi
Slippery Slope (Score:3, Insightful)
"Your honor, the defendant's cell phone was detected half an hour after the crime was committed, heading away from the crime scene along I-85 doing 65MPH. Clearly, he was speeding to try to get away from the crime scene."
Re:Slippery Slope (Score:5, Informative)
CIRCUMSTANTIAL EVIDENCE - Circumstantial evidence is best explained by saying what it is not - it is not direct evidence from a witness who saw or heard something. Circumstantial evidence is a fact that can be used to infer another fact..
Circumstantial evidence is generally admissible in court unless the connection between the fact and the inference is too weak to be of help in deciding the case.
You need a lot more than a single circumstantial fact to "prove" that someone committed a crime. Rather, you need a large number of such facts that close in on the case and provide a single, inescapable conclusion. Even if you have done that, be prepared for the defense to argue each point under a "hypothetical" context, thus convincing the jury that the "evidence" is nothing more than a set of coincidences presented in such a way as to make the defendent look guilty.
That data is already tracked (Score:2, Interesting)
Re:Slippery Slope (Score:2)
EZ-Pass aleady used for this... (Score:5, Informative)
Here it is in the service agreement (search onpage for 'monitoring'):
https://www.ezpass.csc.paturnpike.com/paturnpike/
Re:EZ-Pass aleady used for this... (Score:2)
You are not required to tie the E-ZPass account to a credit card. You can have them bill you monthly. Even if you do tie the account to a CC, you aren't debited for the toll amount every time you pass through. You put $25 or $35 on account with E-ZPass, and the amount is debited from that. When you reach $10, your CC is billed that $25 or $35 again. I'm sure they make a ton of money on the
Re:EZ-Pass aleady used for this... (Score:2)
Can you be more specific? Do you mean monitoring flow at toll plazas or are they tracking flow with EZ-Pass at non-toll plaza locations. In Maryland I have noticed solar operated sensors on the side of the highways in various locations. I've wondered if these are collecting EZ-Pass info or just counting cars in general, but I'm not sure. Any ideas?
Re:EZ-Pass aleady used for this... (Score:2)
You're not required to get one of these EZ passes are you? Do you have to interact with people at the toll booths? The ones I've seen here, just have a booth at one end...you either throw the money in the basket, or hand to attendent...and drive on. There's no booth at the end of the thing...so, do you have to check in at one end and check out at the other?
I was looking at some web
Re:EZ-Pass aleady used for this... (Score:2)
Nope. It's offered as an incentive to pass through tolls much quicker. It can be quite useful if you drive toll roads on a regular basis, especially if there's a lot of traffic backed up at tolls.
Do you have to interact with people at the toll booths?
Nope. You don't interact with people at all if you have an EZ Pass.
The ones I've seen here, just have a booth at one end...you either throw the money in the basket, or hand to attendent...and drive o
hypocritic (Score:2, Insightful)
Re:hypocritic (Score:2)
No. It would be hypocritical if they discouraged cell phone use, and then used cell phones themselves while driving.
Re:hypocritic (Score:2)
Re:hypocritic (Score:5, Informative)
Not hypocritical at all.
A cell phone is trackable even when its owner is not talking on it.
This article [howstuffworks.com] provides a good outline on what happens. Basically, there's a control channel, through which your phone communicates whenever it's got a battery in it. Your phone listens for an SID (System Identification Code) on this channel, and tells the appropriate MTSO (Mobile Telephone Switching Office) "Hi, I'm here". The MTSO has to know where you are, so that it can route incoming calls to the device.
All that's happening here is that the traffic monitoring folks are listening in on the back-channel communications between a large number of cell phones and base stations, and using the changes in location (as averaged over a large number of devices) to guesstimate the average speed of traffic. Individualized cell phone tracking is useless for a traffic flow application, so it's actually highly likely that the traffic folks are telling you the truth when they say that individual data isn't being logged, and that only aggregate data is being recorded.
The technology's nothing new - a system like this is necessarily a part of any wireless phone system, otherwise your phone couldn't ring when someone called you. No such agency is now permitted to do such a thing domestically (a sentence that can be parsed in at least eight ways, all of which are true), but they probably don't, because everyone else who's also interested in individualized tracking, is already doing this, has been doing this for years, and is using other tricks in software to locate their targets to within a few meters, all in real-time. They aren't using the traffic-control folks' data, because they don't need it.
Privacy concerns (Score:3, Insightful)
Nothing to see here, please move along (Score:2, Funny)
Re:Nothing to see here, please move along (Score:2)
What they will find out... (Score:4, Insightful)
Does powering off work? (Score:2, Interesting)
I once read, here I beleive, that powering off a cell phone doesn't keep it from transmitting. You have to remove the battery or put it into a foil bag. Is this correct?
What is the best to protect your privacy with regard to location with a cell?Re:Does powering off work? (Score:2)
Leave it at home.
Re:Does powering off work? (Score:2)
Leave it at home.
Leave it at smoeone else's home.
Re:Does powering off work? (Score:4, Informative)
Re:Does powering off work? (Score:2, Funny)
Re:Does powering off work? (Score:2)
Re:Does powering off work? (Score:2)
hey gramps, 1971 called, they want their mindset back.
As a St. Louis commuter... (Score:3, Interesting)
Re:As a St. Louis commuter... (Score:3, Funny)
My state makes me sad (Score:3, Interesting)
Of course, if people would simply stop trying to cut everyone else off, and not drive like total pricks, there wouldn't be any problem. Not to mention the fact that the white flight has caused all these upper middle class jerks to move out of the city but still work there, burning gas for hours each day just to drive back and forth to work.
Re:My state makes me sad (Score:3, Informative)
Case in point — Interstate 74 [upgrade74.com] in Peoria, Illinois. Worst urban highway I've ever driven on. The signs specifically tell you to keep left so that you don't collide with merging traffic. This is after you have to keep right... so that you don't collide with merging traffic coming in from the left. This is because the ramps in this area are about 500 feet long (most modern Interstates give you about a quarter of a mile.
Re:My state makes me sad (Score:2)
Well...if they could make the city safe again, and provide upscale living units, better city services, and schools...you'd not see people leaving for suburbia. And don't kid yourself..it isn't just white flight any more. Pretty much anyone regardless of race that starts to reach middle/upper middle cla
Not clean! Must wash again! (Score:2, Funny)
My first thought (Score:3, Interesting)
Not that this has anything to do with music...but it's certainly a step in the direction of Doctorow's future.
Be careful what you assume (Score:5, Insightful)
In the words of C.W. McCall... (Score:5, Funny)
Ever more glad I don't have a cell phone (Score:2)
I gave up my cell phone awhile back and haven't been happier. If a company gives me a cell phone to use i'll use it but at least it doesnt have MY name on it.
My growing weary of cell phones began when i worked for a company who would pay you an extra amount each month to upgrade you to the higher plan and then proceed to give your personal cell phone number to all the users. (this was a desktop support position)
Suddenly you have users cal
Re:Ever more glad I don't have a cell phone (Score:4, Insightful)
You get to be one of those fortunate jobhunters who 'wait by the phone!'
For some bizarre reason, when my cellphone goes off I am somehow able to ignore it... in fact, I rarely pick up my phone for any caller unless it's someone I *really* want to speak with. No caller ID? You're welcome to leave a voicemail that I may review at some point in the future.
To me, a cellphone is an enabling technology- it enables me to make and receive phone calls at my convenience. It does not force me to take work calls after hours, nor does it force me to answer it everytime it rings in a movie theater. Those are human behaviors that I can control. I guess if you can't control your own behaviors, then getting rid of the technology that enables bad behaviors is the only answer...
Re:Ever more glad I don't have a cell phone (Score:2)
2. if i need a cell phone i can borrow my girlfriends for a little bit but i find ive only needed it once.
3. the chills from the ringing have to do with a boss that didnt accept poor reception as an excuse for not answering a call and would yell at you for not immediately returning the call even if it took awhile for the voicemail indicator icon to show up with sprint.
It doesn't matter (Score:3, Interesting)
Let's say the neighbor of a good friend is busted selling drugs. The DA could subpoena records that show you visiting that location on a regular basis, and suddenly you find yourself with a lot of unwanted and unwarranted attention.
It doesn't matter what the data is intended for, the collection of it opens a Pandora's box and the sincerity of the original party collecting the data becomes meaningless when the data vultures show up at the feast.
Skewed Results (Score:3, Insightful)
Think about it, a car full of teenagers will show several cell phone signals versus a car full of seniors or nuns which would probably have 0 cell phones inside.
Re:Skewed Results (Score:2)
Re:Skewed Results (Score:2)
As I said (keyed in) in an earlier post, it doesn't matter how many cell phones there are. You can track how quickly they move from one cell to another, and know if traffic is jammed or not on a specified area of highway.
Re:Skewed Results (Score:2)
Well, going that route. Wouldn't it look like a traffic jam if a bus full of teens broke down and was pulled over beside the road?
Problem with the slashdot article. (Score:2)
missing the point... (Score:2, Insightful)
Re:missing the point... (Score:2)
I would disagree. We should never put away our fears of Big Brother. What we consider innocuous today would have been considered outrageous breaches of privacy a couple decades ago. Incremental intrusions on our privacy are hard to stop, and saying that we can let one go because it seems harmless is exactly how that happens.
Already live in the Netherlands (Score:2, Interesting)
What you say? (Score:2, Funny)
"One!! One car travelling down i90!!! Ahahahahah!!! Two!! Two cars travelling down i90!!! Ahahahahaha!!!..."
Legal for private companies? (Score:2)
SONNOVA!!! (Score:3, Insightful)
We built an entire set of services around tracking cellphones and the first thing we demo'd was a videowall anon tracking cell users on freeways.
We did a bunch of work for the NRC (National Research Council) here in Canada and got a grant to study it further.
Then the bubble burst, VC funding dried up and they sold off their assets.
*sigh*
What about airplanes? (Score:2, Insightful)
Re:What about airplanes? (Score:2)
Murphy's Law (Score:2, Interesting)
1. The information will be organised and recorded at one central location - which will break
2. It uses the latest technology and, i assume, some stastical/mathematical techniques - which will probably be
incorrect and will end up giving false results anyway
3. 1 and 2 will cause extra congestion and extra cost - yippee!!!
http://petantik.blogsome.com/ [blogsome.com] -
Privacy when Broadcasting Radio Signals (Score:2)
Not that I don't want privacy when I'm talking on a cell phone - in fact, I'd pay more for say, some reasonable level of encryption on my cell phone.... I just don't think its some sovereign right
Re:Privacy when Broadcasting Radio Signals (Score:2)
I'm in firm agreement. Broadcasting is broadcasting.
If I want a true expectation of privacy, then I need to secure my network. That means physical security. If you tap into my line and read my data, then I'll be relatively upset, and I think you've done something wrong. If you overhear what I'm saying, then that's my stupid fault.
Granted, there are limits to this. I think it's wrong to go around with laser microphones and try to listen in on people's conversations when there is an expectation of privacy.
Re:Privacy when Broadcasting Radio Signals (Score:2)
re "sophisticated" (Score:3, Funny)
"We won't track you" (Score:2)
Re:Now they will really know where we are (Score:2)
Re:Now they will really know where we are (Score:2)
Re:Now they will really know where we are (Score:2)
Re:Now they will really know where we are (Score:2)
Re:You see son... (Score:2)
wow man (Score:2)
You forgot I-55 though. That's always moving fine. Go figure.
Re:Incredible waste of money and invasion of priva (Score:2)
Besides, hasn't some TV station had installed sensors all over the metro area anyway? What a waste.