The summer travel season is here! That means long car rides, lots of questionable gas-station restrooms and, if you don’t head into your summer road trips prepared, even more junk food.

“Stopping at gas stations and fast-food restaurants for quick snacks is so tempting when you aren’t prepared,” says Alex Caspero , a St. Louis-based registered dietitian and founder of Delish Knowledge . But putting together an arsenal of healthy and tasty snacks can be just as easy.

[See: Healthy Snacks for When You Feel Hangry.]

To prove our point, we teamed up with top nutritionists to identify 21 easy, healthy snacks that are perfect for on-the-road snacking. All you need is a little planning, a cooler and maybe a few wet wipes for easy clean up. [custom_gallery]

Sources: Rania Batayneh, nutritionist and author of “The One One One Diet”; Alex Caspero, registered dietitian and founder of Delish Knowledge; Jim White, registered dietitian and spokesman for the Academy of Nutrition and Dietetics; Daphne Olivier, a registered dietitian and certified diabetes educator.

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21 Healthy Summer Road Trip Snacks originally appeared on usnews.com