AAA projects a busy Fourth of July travel season, with more than 72 million Americans—and nearly 217,000 South Dakotans—hitting the roads and skies. According to the report, South Dakota’s anticipated numbers highlight the state’s enthusiastic participation in one of the country’s most-traveled holidays.

As travelers flock to Colorado’s majestic mountains this Fourth of July, heavy traffic on I-70 could put a damper on holiday plans. Here’s why planning ahead is more important than ever.