AAA predicts holiday travel will increase 4.9% over the Fourth of July weekend, with 42.3 million Americans hitting the road — or airport, train station and the like — between Tuesday, July 3, and Sunday, July 8. That's up 42% over Independence Day travel in recession-strapped 2009. Lower gas prices play into the increase. A gallon of regular averages $3.50 nationally, down 19 cents from a month ago, leading 35.5 million of those travelers to plan on piling into their car for the long weekend. Even those who fly may drive more: Rental-car rates for the holiday weekend are down 9% from a year ago, AAA says. If you're planning to pile the family in for that trip to Walley World, Volvo's tips for safe road trips is a good primer.
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