HankLloydRight
No Roads
On the parallel parking, I think people who park and then get out of their car give that info back to the mapping apps, they moved partway down the street, then didn't move for a few minutes. The app on the phone then realizes that they aren't driving anymore, so it stops relaying map data, but the one or two erroneous reports before that have already "poisoned" the data for that street.
With all the time and development put into these mapping/traffic apps, and the data they collect, that solving this problem is simple compared to some others. I really do not think a row of parallel parked cars would ever fool the traffic apps into being actual traffic. It's so easy to detect when someone is parking and just throw out that data. In fact, the phone/device itself can micro-detect a short reverse movement and just not report any data after that point until significant forward movement is detected. See? Problem solved.
This also happens near schools where parents are picking up kids, because the parents (and their phones) are staying in the car and waiting. Yet the line to pick up the students is actually not on the road, it's on a pickup driveway adjacent to the road -- the road itself is relatively clear.
Yes, but in my experience, school pick up lines move very slowly, but they are moving, and therefore not parked. It's actual traffic and reported/reflected accurately in the apps.