[a47thrandomfox]

My wife and I can have Waze open at the same time, in the same car, with the same place as the destination and the route will be different.

[maerF0x0]

+1 to A/B test peer comment .

Also because alternate routes have limited capacity I'm sure there's some randomization to avoid thundering herds.

[shaftway]

Doesn't Waze deliberately send people down different routes to A / B test them?

[crooked-v]

And even without A/B testing, there's obvious user experience reasons to evenly split traffic among alternate routes with about the same travel time.

[lithos]

Waze also seems to shape traffic as well.

There are also other times it seems to try to purposefully send me down the worse route. My assumption is that it's to get an analytic of the worse route.

[nerpderp82]

Waze is often better, I do the same thing. GM doesn't seem to account for lights or left turns as well as Waze.