Why? If you're pulled over on the shoulder, it's for refuge from the traffic speeding past. How does it make sense to encourage slightly slower traffic to use a

Why? If you're pulled over on the shoulder, it's for refuge from the traffic speeding past. How does it make sense to encourage slightly slower traffic to use a lane where at one time or another will be vulnerable people and stationary vehicles? Surely a safer solution is employing correct lane discipline.