WASHINGTON — The Transportation Security Administration said that more than 2.5 million people a day will be flying between Memorial Day and Labor Day, including 40,000 a day out of BWI Marshall Airport. That means a lot of time standing in a security line under the best of circumstances, and the TSA wants to make sure people know how to keep that time from getting any longer.

On Tuesday, the TSA issued a list of ways to get yourself through any airport faster. They include:

• Signing up for TSA Pre, which for a frequent flier may easily be worth the cost;
• Going to the TSA website’s What Can I Bring? section, where you can type in an item and find out whether you can pack something in your carry-on, your checked bags, either or neither — you can even send them a picture of the item through Twitter or Facebook Messenger;
• Having your ID and boarding pass in your hand when you get to the line;
• Dressing for the occasion: Leave off any scarves, hair accessories, bulky jewelry or anything else that you’d have to take off while people are waiting. That goes for whatever’s in your pockets too: Don’t stand in line fumbling to move stuff from your pockets into the trays (and vice versa after the screening).

And remember the 3-1-1 rule. The TSA did a “show and tell” presentation on Tuesday at BWI Marshall about what can and can’t be taken on a plane:

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WTOP’s Neal Augenstein contributed to this report.