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.