Buick 1993 Roadmaster Owner's Manual page 184

Free-way Driving
Mile €or mile, freeways (also called thruways,
parkways, expressways, turnpikes, or superhighways)
are the safest of all roads. But they have their own
special rules.
The most important -advice on freeway dJiving is: Keep
up with traffic and keep to the right. Drive at thesame.
speed most of the other drivers are driving. Too-fast or
too-slow driving breaks a smooth traffic flow. Treat the
left lane on a freeway as a passing lane.
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