This happens with both though. I've had Google try to send me the wrong way down a one-way street, as well as take me round the houses because it thought a two-

This happens with both though. I've had Google try to send me the wrong way down a one-way street, as well as take me round the houses because it thought a two-way street was one-way. We'd need some kind of large study to say which was worse in that respect.