Automobiles are not railway locomotives. They do not run on fixed rails. Obviously, K.S.A. 8-1522(a) does not prohibit a vehicle from changing lanes. A driver is permitted to exercise, rather is required to exercise, discretion in deciding when and whether to change lanes. We need not drive through a pothole in the road and damage our vehicle in the process when we may safely avoid it by changing lanes or moving partially onto the shoulder of the roadway. K.S.A. 8-1517 permits us to leave our regular lane of travel to pass a slower moving vehicle when we overtake it. A stalled automobile or a fallen tree limb in the roadway ahead does not require us to wait for its removal. We drive around it.Here is a link to a post on FourthAmendment.com including this case. I've seen this issue in at least one other case, so I bet it is in some others.
[Update: the state filed a PR on February 20, 2007].
[Update: the KSC denied the PR and the mandate issued on June 22, 2007].