1998 GMC Jimmy Owner's Manual - Page 215

Highway Hypnosis Is there actually sucha condition as "highway hypnosis"? Or is itjust plain falling asleep at the wheel? Call it highway hypnosis, lack of awareness, or whatever. There is something about an easy stretch of road with the same scenery, along with the hum of the tireson the road, the drone of the engine,and the rush of the wind against the vehicle that can make sleepy. Don't let it you happen to you! If it does,your vehicle can leave the road in less than a second, and you could crash and be injured. What can you do about highway hypnosis? First, be aware that it can happen. Then here are some tips: 0 Hill and Mountain Roads Make sure your vehicle is well ventilated, with a comfortably cool interior. Keep your eyes moving. Scan the road ahead and to thesides. Check your mirrors and your instruments frequently. If you get sleepy, pull off the road into a rest,service or parking area and take a nap, get some exercise, or both. For safety, treat drowsiness on the highway as an emergency. 0 Driving on steep hills or mountains is different from driving in flat orrolling terrain. If you drive regularly in steep country, or if you're planning to visit there, here are some tips that can make your trips safer and more enjoyable. (See "Off-Road Driving" in the Index for information about driving off-road.) 4-34