Use an insulated cooler with ice or ice packs to keep food at 40 degrees or below. Pack food right from refrigerator into cooler just before leaving home. Keep cooler in coolest part of car. Keep cooler out of sun by placing in shade or shelter. Avoid opening lid often.
Pack beverages in one cooler, perishables in another.
Keep everything clean. Be sure there are plenty of clean utensils and platters. To prevent food-borne illness, don't use the same platter and utensils for raw and cooked meat. Harmful bacteria present in raw meat and poultry and their juices can contaminate safely cooked food. If you're eating away from home, find out if there's a source of clean water.