Some states have laws that restrict use of left lanes for passing. Many states have laws requiring drivers who are moving slower than the rest of the traffic,

Some states have laws that restrict use of left lanes for passing. Many states have laws requiring drivers who are moving slower than the rest of the traffic, regardless of the speed limit, to keep right. Most of the time if somebody is going the speed limit for any length of time in the left lane, there often is legitimately is an issue that they can be ticketed for. http://www.mit.edu/~jfc/right.html http://www.mit.edu/~jfc/right.html