That's a rule of thumb that might not apply so well to dead straight roads with long distances between exits. The semis aren't entering the third lane. Other

That's a rule of thumb that might not apply so well to dead straight roads with long distances between exits. The semis aren't entering the third lane. Other vehicles would be, and the fast lane ought to slow down when passing... of course, some people would, and others wouldn't. More practically it's 100 mph versus somebody changing lanes at 85 mph. Or maybe 120 mph versus somebody changing lanes at 85 mph, at night... As a former I-5 driver I'd like to see this tried; to mitigate the cost of accidents we could build a few mass graves in Cowschwitz.