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View Full Version : o/t how good is that GPS ?



renovation
08-08-2008, 11:08 AM
A GPS device led a convoy of tourists astray in southern Utah, finally stranding them on the edge of a sheer cliff.

With little food or water, the group of 10 children and 16 adults from California had to spend a night in their cars deep inside the Grand Staircase-Escalante National Monument.

They used a global positioning device to plot out a backcountry route Saturday from Bryce Canyon National Park to the Grand Canyon.

But the device couldn't tell how rough the roads were. One vehicle got stuck in soft sand, two others ran low on fuel. And the device offered suggestions that led them onto the wrong dirt roads, which ended at a series of cliffs.

The group was so lost it couldn't figure out how to backtrack and started to panic. Kids were crying, and one infant was sick with fever, according to a member of the party.

"It was a nightmare - the vacation from hell," Daniel Cohen, back home safely in Los Angeles, told The Associated Press on Tuesday.

From Grosvenor Arch, where the travelers stopped, they should have taken the better-traveled Cottonwood Canyon Road. Instead, they took Four Mile Bench Road, which takes a meandering southeasterly path. Chief Deputy Tracy Glover said the convoy took one wrong turn after another onto a succession of lesser dirt paths that are barely passable in the best of weather. They finally ended so some 25 miles from Grosvenor Arch near Tibbet Canyon.

"They just kept driving and driving and driving," Glover told the AP.

"It was a night without the moon, so it was even harder -- we couldn't see nothing," Cohen told CBS News.

Cohen said the group had no idea it was setting off in the wrong direction.

"A friend with navigation device said we should go that way, and we all went that went," he said to the AP. "I had no clue where we were, I can tell you that. But the next day, when we saw the airplane, we were jumping."

Glover said a GPS device is no substitute for good judgment or detailed topographical maps.

"People can start down a nice, graded dirt road and it can soon turn into boulders and deep washes, but they continue driving instead of turning around. I don't understand it," Glover told The Salt Lake Tribune. "The shortest way is not always the quickest way."

It took a lot of back-and-forth cell phone calls, but sheriff's deputies were able to find the group Sunday and lead them back out to Cannonville.

It wasn't the first time Staircase visitors have wandered into near oblivion. Dozens have been stranded since the monument was created in 1996, often with the false encouragement of a GPS device, said Bureau of Land Management spokesman Larry Crutchfield.

And the incident is only the latest in a string of GPS-related blunders.

Last January, a California man mistakenly drove onto commuter railroad tracks north of New York City, and ditched his car just before it was destroyed by an oncoming train.

In Secaucus, N.J., reports CBS News correspondent Priya David, residents of a quiet residential street complain to town officials about the gridlock caused by a mistakenly labeled GPS map that fails to show a gate that exists between their street and a busy industrial park.

"We'll see trucks, we'll see campers, we'll see everything backed up at the gate," says Secaucus Councilman Michael Gonnelli, "because the navigation system sends them this way not realizing there's a structure in the middle of the roadway."

On The Early Show Friday, Natali Del Conte, a senior editor at CNET-TV, said consumers should look for a capability in their GPS devises called WAAS -- Wide Area Augmentation System -- which sharpens a device's accuracy.
http://www.cbsnews.com/stories/2008/08/08/earlyshow/leisure/gamesgadgetsgizmos/main4332408.shtml
i know i have had my gps units end me wrong .lucky i know it was before i made the turns .

nate el bueno
08-08-2008, 12:51 PM
I smell a lawsuit.

WhiskeyPapa
08-08-2008, 01:22 PM
GPS can't find my office. My business is located in a technology campus - kind of like a high-tech industrial park. Most mapping services still label it as "Willmar State Hospital" which it hasn't been since 1985.

attgig
08-08-2008, 02:18 PM
hahahaha.

I love the roads out there. beautiful. My friend's Microsoft Streets and trips gave us an awesome route to follow. Of course, we checked all that before we actually went. But yeah Escelante is beautiful, and would love to go back there and spend more time there. Bryce - also beautiful.

mojo
08-09-2008, 12:58 PM
what? a device of modern technology isn't perfect? what a surprise. next you'll tell me that i can lose an internet connection, a car with a full tank of gas can stop running, or that you can pick up a phone and get no dial tone.

i just opened a gps last night, and i noticed that it said something about checking routes and stuff. it also said that the global positioning system is maintained by the US government. so i'm not sure who they'd even blame...the manufacturer, or uncle sam.

i've had my gps lead me the "wrong" way a couple of times. but mostly because of my misunderstanding. i've had it save my bacon way more often than that tho. so overall, i'm thinking we're better off with the gps system.

cruelpupet
08-10-2008, 11:19 AM
Glover said a GPS device is no substitute for good judgment or detailed topographical maps.

"People can start down a nice, graded dirt road and it can soon turn into boulders and deep washes, but they continue driving instead of turning around. I don't understand it," Glover told The Salt Lake Tribune. "The shortest way is not always the quickest way."


:duh: :stupid: :agree:

gear02
08-10-2008, 11:47 AM
i just opened a gps last night, and i noticed that it said something about checking routes and stuff. it also said that the global positioning system is maintained by the US government. so i'm not sure who they'd even blame...the manufacturer, or uncle sam.


The US government maintains the GPS network, but all that gives you is your position on earth. The GPS network knows nothing about the roads, where the nearest Starbucks is, etc.

All the GPS manufacturers utilize a couple of map providers (Teleatlas, etc.) They're the ones who map out the roads and find all the points of interest.

So who's to blame? How about themselves? Those who follow their GPS devices to their death should be proudly enshrined in the Darwin awards all of fame.

WhiskeyPapa
08-11-2008, 08:53 AM
The US government maintains the GPS network, but all that gives you is your position on earth.

The GPS network doesn't even "know" positions on earth. It's amazingly simple - I've seen the raw data transmitted by these satellites (I was a developer on one of the first commercial applications for GPS back in the early 90s.)

In its most basic sense, each satellite transmits the exact time and where it is in orbit. The receiver uses the arrival time of each message to calculate its distance from each satellite, then through some basic trigonometry and geometry, calculates its position.

mojo
08-11-2008, 10:03 AM
The GPS network doesn't even "know" positions on earth. It's amazingly simple - I've seen the raw data transmitted by these satellites (I was a developer on one of the first commercial applications for GPS back in the early 90s.)

In its most basic sense, each satellite transmits the exact time and where it is in orbit. The receiver uses the arrival time of each message to calculate its distance from each satellite, then through some basic trigonometry and geometry, calculates its position.
ok...so where do the fairies and gnomes come into play? :hmm:

gear02
08-12-2008, 02:37 PM
The GPS network doesn't even "know" positions on earth. It's amazingly simple - I've seen the raw data transmitted by these satellites (I was a developer on one of the first commercial applications for GPS back in the early 90s.)

In its most basic sense, each satellite transmits the exact time and where it is in orbit. The receiver uses the arrival time of each message to calculate its distance from each satellite, then through some basic trigonometry and geometry, calculates its position.

Damn you're right - I left out that part. It's the actual GPS units that triangulate your coordinates.