MMcNasby

In LA on the 101 and 405 at least they will only need one color on the display - solid red. [That's one reason I am leaving.]

@papaguru: I was thinking the same thing, why not have the cell carrier do this just like the location triangulation in Google Maps on the iPhone. The triangulation is not pinpoint accurate but it seems to me to aggregate speeds on roadways it does not have to be.

Make it work with my phone and it is a defining purchase feature. Make me have to pay for another service and gadget and I will have to pass.

Vagabum

My first gut reaction was "this sounds like cool tech". Now I feel much more confident going with that first thought...

ideaman2020

Let me start by addressing the privacy issues. We have gone through great lengths to make sure we DO NOT capture personally identifiable location information from our users. If you talk to the EFF about these types of issues they will start by saying the following: "Rule #1 - just don't capture the data and that makes everything else easier"... so we followed this rule. We do know that A dash device is driving on a road somewhere, but we don't know whose device it is, and honestly we do not want to know and we have built our system to NOT know.

@FThorn - have you checked out the service called "Trapster"? Did I mention that Dash has an open content platform with an API for third parties to develop against? More on how this all fits together at a later date.

derelikt - we took the LA screen shot around 3:30pm on March 7th.

@FredicvsMaximvs - We use 5 colors for our traffic solution: Green = free flow, Yellow = mild congestion, Orange = heavy congestion, Red = stop and go, white = no data for for the road. Our testers have felt this is a good level of granularity, but if we need to improve it over time we will do a software update that we send down to the device wirelessly.

dash_mark

ackthbbft

[I'm so glad there are lawyers in the house...]

ideaman2020

Maybe not instantaneous speed, but average speed over a short (1km) run could be proven. GPS position is accurate to about 10 meters, so distance traveled would be off only 20 meters for 1 km, or about 2%. GPS time is extremely accurate. A GPS speed record, averaged over 1km is accurate enough to prove you were speeding.

"Just like EZPass. The only way to get a ticket from EZPass is for speeding thru the toll booth."

Wrong again. If I cover 60 miles between tollbooths in 45 minutes, and the speed limit is 60 MPH, I'll have a very difficult time proving I wasn't speeding. It has nothing to do with the EZ-Pass and everything to do with the accuracy of the time reference at the two tollbooths. And the EZ-Pass doesn't even need to be working, because the system also reads your plate (left the transponder in the other car one day and still got the toll record...luckily, not a ticket!)

PeterSimpson

Git Em SteveDave displays attention-grabbing vanity

Brian Lam

Data stays fresh only as long as 15 minutes. Whole thing works on tiers of trust of how good the data is.

Brian Lam

Brian Lam

Dash works on two levels. A historic model, that does traffic on roads (even local ones) by 15 minute intervals. It knows the diff between weekend/weekday/rushhour traffic patterns on given roads.

Then that model is refined by the data sent back over IP in these units.

They learn.

This is the best traffic system in the world, bar none.

Brian Lam

papaguru

phitool

FritzLaurel

"The ADVANCE Project's primary role in advancing Intelligent Transportation Systems (ITS) technology was the operational test of the use of probe vehicles for real-time traffic information on an arterial and expressway network. It included the development and implementation of techniques to fuse data from such diverse sources as probe vehicles, fixed detectors and anecdotal reports to provide dynamic route guidance information to drivers."

Read the whole report here:

[www.itsdocs.fhwa.dot.gov]

In those days, in-car navigation was in its infancy. The best part? When the computer crashed, which it did often, you had to reboot, and the only way to do that was to turn off the car's engine and turn it back on. Loads of fun!

Jonathan-L

And my cell phone only shows where I am when I call 911 or turn on a GPS app [otherwise I have the GPS turned off].

ideaman2020

egojab

egojab

@FredicvsMaximvs: do we need more than three colors though? 0-30, 30-60, 60+?

Paradise

Time to wrap the car in tin foil...

FredicvsMaximvs

However, with all this snazzy tech, surely we can do better than two or three colors to indicate speeds, ja?

FredicvsMaximvs

It should be personal choice_

I don't typically get lost_ ANd I usually look at and plan out where I'm going ahead of time - if I've never been there before_

and like JKR said - Companies do not need to know jack about my travel habits_ Not their business_

uberfu

jkr

derelikt

But I fear the idea that Big Brother will know where we are and how fast we're moving...

ideaman2020

karmaghost

FThorn

rbf2000

Paradise