ETA assumes I will speed

Navigation apps also track traffic flow; there are enough navigation apps on any highway to “see” the average speed on the road. They don’t just tell you how fast you are going, they also note the average speed of all GPS apps on that stretch of highway. Waze was the first to do this, but Google, Apple, and many 3rd party apps now do this also.

In addition, DOT provides information on construction and other impediments to travel to the navigation app databases.

Lawrence Finch wrote:

Navigation apps also track traffic flow; there are enough navigation apps on any highway to “see” the average speed on the road. They don’t just tell you how fast you are going, they also note the average speed of all GPS apps on that stretch of highway. Waze was the first to do this, but Google, Apple, and many 3rd party apps now do this also.

Very cool. And almost as creepy as the DOT tracking toll transponders.

I remember when Waze was great. Before Google bought it.

Are you in the U.S.? Have you ever seen those signs on highways that give the distance and estimate time to reach a certain exit? They will frequently give an ETA that would require that you speed. They are based off of current flow of traffic. They get the information from the toll transponders so many of us have in our cars. I don't know for certain but, navigation apps may be able to get that information from the DOT.

If it's good enough for the DOT.....

It’s likely determined based on the flow of traffic or the posted speed limit on each segment.

IdrisSeabright wrote:

I remember when Waze was great. Before Google bought it.

So was Fitbit before Google bought it, and Nest before Google bought it, and a certain weather app before Apple bought it.

Unlikely.

Lawrence Finch wrote:

So was Fitbit before Google bought it, and Nest before Google bought it, and a certain weather app before Apple bought it.

And of course, SoundJam.