Roads can be very wide in the US, it is not uncommon for cities to have 6 or 8 lane roads at-grade (i.e. not expressways). So when turning left, one must turn a

Roads can be very wide in the US, it is not uncommon for cities to have 6 or 8 lane roads at-grade (i.e. not expressways). So when turning left, one must turn across 3 or 4 lanes of oncoming traffic, instead of just one as when turning right.