1996 GMC Sonoma Owner's Manual - Page 161

F eeway Drivin The most important advice on freeway driving is: Keep up with traffic and keep to the right. Drive at the s m e 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. 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 deterrnine'where you expect to blend with the flow. Try to merge into the gap at close to the prevailing speed. Switch on your turn signal, cl1ec.k your mirrors and glance over your shoulder as often as necessary. Try t o 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 i n the right lane unless you want t o pass. Before changing lanes. check your mirrors. Then use your turn signal. 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 i n your "blind" spot.