dash traffic

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Dash Blog just unveiled more details about their traffic solution. One of the questions they answer is “how many Dash users do you need to get good traffic data?”. The answer is only a few. Their software is smart enough to utilize minimum number of users – but any additional device will provide better data. So there’s no lower or upper limit. As an example 8th largest metropolitan area – Washington D.C. – only requires 1000 units for the Dash Driver Network to provide live up-to-the-minute data for most major roads during commute hours.

The users are not only source of information for Dash’s traffic network. They also combine knowledge from road sensors, commercial fleets, and other sources used by Inrix. In addition every Dash device ships with historic traffic models for every major metropolitan area in the US, not just for highways… all the way down to those smaller neighborhood roads. Dash learns how fast every road segment you drive historically moves for every 15 minute time segment for every day of the week.

You may also wonder how to tell where the data is coming from? If the lines are solid your data is more reliable meaning it is coming from other users after passing through Dash Driver Network. If the lines are dashed the source is either third party sensor or historical data.
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One Response to “dash traffic”

  1. The Secret to Dash’s Live Traffic Data: Crowdsourcing Says:

    [...] 4. Dash then sends out updates to all of the Dash devices in the area with current road speeds So what you’re probably getting is that the first guy with a Dash is going to be like the goose at the head of the flock, making everything better for the rest. How many drivers in one metro area are needed until the system of realtime crowdsourced data is reliable? For an averaged sized metropolitan area it takes just a few hundred units for the Dash Driver Network to provide live up-to-the-minute data for most major roads during commute hours. For a major city, the number is more like 1,000, but then again, major commuter cities are probably where Dash will sell the most units up front, so I see it as a self-fulfilled prophesy kind of thing. Right now, Dash is looking only at data from its beta run, so for instance the LA map above was filled in by only about 40 testers. (Note the dotted lines where new Dash users will still rely on Inrix data.)When the device hits the market, all those lines will go solid—green or red depending on whatever kind of hellish commuter traffic you’re in for. Dash can steer you around it maybe, but it lacks the guided surface-to-surface missileage to actually make the other commuters go away. [ Dash via NaviGadget] [...]


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