1994 Buick LeSabre Owner's Manual - Page 168

Freeway Driving The most important advice on freeway driving is: Keep up with traffic and keep to the right. Drive at the same Mile for mile, freeways (also called thruways, parkways, expressways, turnpikes, or superhighways) are the safest of all roads. But they have their own special rules. Just before you leave the lane, glance quickly over your shoulder to make sure there isn't another vehicle in your "blind" spot. Once you are moving on the freeway, make certain you allow a reasonable following distance. Expect to move slightly slower at night. 166