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Cellphone Drivers Drive Like Drunks

TDavid writes "A University of Utah study claims that drivers who use a cell phone will be 'more impaired than drunken drivers with blood alcohol levels exceeding 0.08.' The study also says that use will turn a driver who is age 20 into age 70. Hands-free systems apparently don't help much either as they still require a driver to 'actively be part of a conversation.' What about in vehicle systems like OnStar?"

22 of 1,032 comments (clear)

  1. Related article on The Register by sczimme · · Score: 2, Informative


    Clicky.

    The folks at El Reg had a question:

    "Which means that a 70-year-old yakking away on his cellphone has the reaction times of a 120-year-old, or have we misunderstood this rather poor analogy?"

    --
    I want to drag this out as long as possible. Bring me my protractor.
  2. Re:OnStar by rjstanford · · Score: 2, Informative

    Actually, OnStar provides outbound celphone like service, for an additional fee. It has the advantage of working damn near everywhere, even in cel dead spots. It has the disadvantage of being expensive.

    --
    You're special forces then? That's great! I just love your olympics!
  3. And edit like? by pjt33 · · Score: 4, Informative

    Does this 0.08 "blood alcohol level" have any units?

    1. Re:And edit like? by leapis · · Score: 4, Informative

      Yes and no. It measures the amount of milligrams per 100 milliliters of blood, but it can be read as a straight percentage too (which has no units). If your blood alcohol level is 0.08, then .08% (8 hundreths of one percent) of your blood is alcohol.

    2. Re:And edit like? by The_Sock · · Score: 3, Informative

      Those "ironmen" are lightweights compared to this guy.

      --
      For a good time call www.sawkie.com
    3. Re:And edit like? by aav · · Score: 2, Informative

      The number is common knowledge in US, although I doubt many know its meaning.

      It actually means a concentration of 0.08% of alcohol in the blood stream. In some countries this is scaled to permille, which, of course would be 0.8 0/00 which, equates, in international units with 0.8 ml/l. As you can see, the measurement units cancel each other and the value itself is a number.

      The reason this number is so popular in US is that in most states this concentration is the threshold above which people are considered legally drunk.

      In general, for a 90 kg male, it would take approximately 5 US beers (5 * 330ml = 1.65l) drank within one hour to achieve this alcohol concentration.

      Look it up on the net for more details - they're readily available.

  4. Re:Old People by Anonymous Coward · · Score: 1, Informative

    Actually, most metropolitan bus systems have special handicapped busses with curbside pickup which the elderly can use.

  5. Re:After almost getting hit this morning... by TheWama · · Score: 2, Informative

    The insurance companies base their rates off a statistical analysis which, frankly, trumps your anecdote.

    Basically, the expected value of any person's insurance claims can be determined based on past results of others in the same group. This applies to people as a whole as well as different age groups and social group (e.g. many insurance companies offer discounts for proof of high grades). Note the grouping can't simply be arbitrary, as they need some characteristic to link you to that group in order for the analysis to have any meaning whatsoever.

    The reson the insurance companiess offer lower prices is that people in those groups, tend to rack up fewer claims, based on the histories of other drivers in the same group. In the case of married types, it just happens that people who are married are less likely to file a claim and cost the insurance company money. Whether the driver is safer because of their greater responsibilty, or thery were responsible in the first place and that won them a mate, we can not say.

  6. Re:OnStar by the+pickle · · Score: 2, Informative

    Actually, that's exactly what OnStar is -- a cell fone with a speakerfone. It just happens to be hooked into some sensors that tell it to fone home in "emergency" mode if certain sensors are triggered. But it has the capability to act as a normal cell fone, too. The minutes/service are just fantastically expensive, so you never hear about it.

    (FWIW, Verizon is now offering OnStar coverage piggybacked onto a regular Verizon plan for an extra $10/month.)

    p

  7. Re: Documentation? by sczimme · · Score: 2, Informative


    I'm afraid he has the science behind him, not you. Go read the studies. Conversations over the phone degrade driving ability more than conversations with someone in the same car.

    He made the assertion; it is his responsibility to provide data to support his assertion. He did not do so, and neither did you. I could tell you to go read the studies that confirm that humans descended from parakeets and it would carry as much weight as what you said.

    This is a basic critical thinking concept: if you make an assertion, it is your job to provide evidence to back that assertion. Otherwise you are just expressing your opinion.

    --
    I want to drag this out as long as possible. Bring me my protractor.
  8. Re:Pull 'em over! by madcow_ucsb · · Score: 2, Informative
    Yes, you always need probably cause, but things like slow driving laws vary from state to state. For example, in California you need a minimum speed sign posted to have a minimum speed. I don't think I've *ever* seen one in CA (though I have seen them in other states).

    But we've still got this handy section in the books:

    22400. (a) No person shall drive upon a highway at such a slow speed as to impede or block the normal and reasonable movement of traffic, unless the reduced speed is necessary for safe operation, because of a grade, or in compliance with law.


    Out here, all you need to do is hold up people behind you and you're fair game. I knew a guy that got cited for that when he was (stupidly) doing 50 on a 65 freeway.
  9. Re:0.08? by PortHaven · · Score: 2, Informative

    I believe that is .08% which would be .0008

    Or .0003 higher level than Belgium allows. But us Americans tend to hold out liquer better than you Belgiums.... ;)

  10. Re:Old People by Psmylie · · Score: 4, Informative
    I agree, to a point... Where I live, there are options available(Metro Mobility, bus, etc.) which, although inconvenient, can get an older person almost anywhere. Yet, older folks around here still fight tooth and nail to retain their driving "rights". When a lot of elderly people say they can't survive without a car, they mean they can't live as convieniently without a car. Public transportation improvements alone are not enough, since many seniors would refuse to take it.

    As far as having elderly people drive... my Grandmother is already at the point where I consider her a hazard to public safety, even though she's convinced that she's a good driver. My Aunts and Uncles are afraid to pressure her into quitting driving (they might make her MAD or something! the horror!). I told them that I would talk to her about it, because her independance is not worth the lives of the family that she might kill because she got distracted at the wrong time or couldn't react quickly enough in an emergency.

    I've already told my own mother that I'm taking the keys away when she gets too old. If her reaction is any indication as to how it will go when I actually try, then I'm sure to be in for a fight on that one...

    --

    psmylie's dictionary: Godzillion (noun) Any number large enough to destroy Tokyo

  11. Re:Interesting... by Anonymous Coward · · Score: 1, Informative

    Download them for yourself,

    http://www.psych.utah.edu/AppliedCognitionLab/

    and follow the references...

  12. Re:Interesting... by rjpcal · · Score: 5, Informative
    I shall have to see if I can acquire these reports. However, I would feel better about the conclusions if they came from more than one source: D. L. Strayer and W. A. Johnston appear to have done the bulk of the work [in both reports] collaboratively. A second report from a wholly different group would help validate Strayer & Johnston's work.
    1. Treffner, PJ; Barrett, R Hands-free mobile phone speech while driving degrades coordination and control TRANSPORTATION RESEARCH PART F-TRAFFIC PSYCHOLOGY AND BEHAVIOUR, 7 (4-5): 229-246 JUL-SEP 2004
    2. McCarley, JS; Vais, MJ; Pringle, H; et al. Conversation disrupts change detection in complex traffic scenes HUMAN FACTORS, 46 (3): 424-436 FAL 2004
    3. Rakauskas, ME; Gugerty, LJ; Ward, NJ Effects of naturalistic cell phone conversations on driving performance JOURNAL OF SAFETY RESEARCH, 35 (4): 453-464 2004
    4. Gugerty, L; Rakauskas, M; Brooks, J Effects of remote and in-person verbal interactions on verbalization rates and attention to dynamic spatial scenes ACCIDENT ANALYSIS AND PREVENTION, 36 (6): 1029-1043 NOV 2004
    5. Golden, C; Golden, CJ; Schneider, B Cell phone use and visual attention PERCEPTUAL AND MOTOR SKILLS, 97 (2): 385-389 OCT 2003
    6. Spence, C; Read, L Speech shadowing while driving: On the difficulty of splitting attention between eye and ear PSYCHOLOGICAL SCIENCE, 14 (3): 251-256 MAY 2003
  13. Portfolio by tarkas · · Score: 2, Informative

    David Strayer has been kind enough to provide an index of papers and articles he's authored or co-authored on this subject (no few - while I would never suggest any kind of bias, he really seems to have it out for cellphones.):

    http://www.psych.utah.edu/AppliedCognitionLab/

    From that index may I point out an item that appears to suggest that merely carry on a conversation even absent the mechanical problems associated with a cell phone/earbud etc. will cause impairment:
    http://www.psych.utah.edu/AppliedCognitionLab/ViV_ 2001.pdf

    This would seem to support the use of HOV lanes not as a reward for environmental sensitivity but as a safety measure for the rest of us singletons just trying to get to work in one piece; HOV need to be partitioned from the rest of traffic to protect us, heh. And what if the passenger is wearing a skimpy dress(!)while yaking about the absolute DEAL they got at Nordstroms.

    Never mind the distraction factor from changing the radio station/CD, eating, makeup, picking nose, etc. Surely tasks that involve the motor regions would be even more troublesome than simply speaking...

    In another item from the DoT, all autos will now be refitted with passenger gags.

  14. Re:This is troubling. by chefmonkey · · Score: 2, Informative

    I have done a little bit of reading into acoustics as it relates to various codecs and the mental processing involved in listening to audio that has been mangled in certain ways. It simply comes down to the fact that you must concentrate very hard to interpret a voice that has had all freqencies above 4kHz cut off, a notch cut out around 1.8kHz, and then had the resultant audio compressed down to something in the 5 to 13 kbps range (depending on the technology your phone uses).

    Not only does it sound bad, but it taxes your brain much more than listening to a person sitting next to you. Based on earlier studies on handsfree mobile phone use, I've often joked that the codecs used in modern telephones are lethally bad.

  15. Re:Old People by Prendeghast · · Score: 2, Informative

    They can if they don't need to pay to maintain a car, cover insurance, pay for gas... To be honest, I have no idea how much it would cost the canonical "old person" in the US to have essential supplies delivered. However, we ran the numbers for my granny when she hit seventy (in the UK, so petrol and insurance might be more expensive) and it worked out to be cheaper for her to pay for a taxi to and from the local supermarket once a week than to keep a car. More of a concern would be the psychological impact of increased isolation, unless they attend some kind of seniors' centre.

  16. Re:OnStar by Kiryat+Malachi · · Score: 2, Informative

    Wrong.

    It has wider coverage because OnStar is AMPS-based, and the AMPS analog network is more widespread than the CDMA/GSM digital networks are.

    However, OnStar will become CDMA based over the next couple years, wiping out that AMPS advantage.

    (And yes, I know this for a fact, considering that the PCB layouts for OnStar MY06 are printed out in a folder next to my desk.)

    --

    ---
    Mod me down, you fucking twits. Go ahead. I dare you.
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  17. Re:Old People by Big+Boss · · Score: 4, Informative
    STOP in the middle of a busy street for no reason so they can put on their glasses.

    I had an old guy slam the brakes to a FULL STOP in the MIDDLE lane of an Interstate (I-15 to be exact) because he missed his exit. This was 65-0 with tires locked up. I damn near rear-ended him and I had about 5 seconds between us. They car behined me almost hit me, etc.. It was damn near a chain-reaction accident. As it was, we had about 1/4 mile worth of cars backed up while he made a hard right to get on the off-ramp. I just about got out of my car to kick his ass for that one. Could have killed any number of people if everyone else on the road hadn't been paying attention.

    Competency testing should be REQUIRED for ALL ages. I don't care if you're 16 or 90, if you can't drive safely, get the hell off the road! If we had cops watching more for this kind of shit and less sitting around eating donuts with thier radar on, perhaps the roads would get a little safer.

  18. Re:Old People by Have+Blue · · Score: 2, Informative

    I don't know how serious you were being, but it's trivial to poke holes in that- what fraction of drivers are drunk? Far, far less than 35%, so they are massively overrepresented in accidents.

  19. Re:Moot point by Have+Blue · · Score: 2, Informative

    On the time scales involved in car accidents, the time spent hanging up or dropping your phone could easily make the difference between stopping a few inches short and a destroyed car/passengers. Someone who is being a menace to other drivers should be stopped before something bad happens, the same way that someone waving around a loaded gun in a populated area should be subdued and arrested even though he's "just" exercising his second amendment rights.