There must be some training involved on the user level. My route to the freeway can take 1 of 2 parallel roads. The bigger road is theoretically a minute faster

There must be some training involved on the user level. My route to the freeway can take 1 of 2 parallel roads. The bigger road is theoretically a minute faster but often enough the left turn lane backs up for multiple light cycles. The smaller road is quite consistent in it's timing. A minute slower if the lights work out and a minute faster if you would have to wait. I prefer the consistent route and now Google almost never tries to send me the "faster" way.