1995 GMC Yukon Owner's Manual - Page 215

Try to use the freeways that rim and crisscross most large cities. You'll save time and energy. (See the next part, "Freeway Driving.") Treat a green light as a warning signal. A traffic light is there because the corner is busy enough to need it. When a lightturns green, and just before you start to move, check both ways for vehicles that have not cleared the intersection or may be running the red light. Freeway Driving Mile for mile, freeways (also called thruways, parkways, expressways, turnpikes, or superhighways) are safest of all roads. But they have their the own special rules. The most important advice on freeway driving is:Keep up with traffic and keep to the right. Drive at the same speed most of the other drivers are driving. Too-fast or too-slow driving breaks asmooth traffic flow. Treat the left lane on a freeway as a passing lane. At the entrance there is usually a ramp that leads to the freeway. If you have a clear view of the freeway as you drive along the entrance ramp, you should begin to check traffic. Try to determine where you expect to blend with the flow. Try to merge into the gap at closeto the prevailing speed. Switch on your turn signal, check your mirrors and glance over your shoulder as often as necessary. Try to blend smoothly with the traffic flow. Once you are on the freeway, adjust your speed to the posted limit or to the prevailing rate if it's slower. Stay in the right lane unless you want to pass. Before changing lanes, check your mirrors. Then use your turn signal. 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. 4-27