Most travelers know you're limited in what liquids you can bring on a flight, but may not know the exact numbers off-hand.

You'll find comparable rules as you travel internationally — though the U.K. is moving toward removing these restrictions.

But the TSA said that until it has the ability to implement detection tech in every airport, the 3-1-1 rule will remain in place. TSA refers to the liquid rule as the liquids, aerosols ...

But perhaps no rule is more misunderstood than the TSA's Liquids, Aerosols, and Gels Rule, specifically, the 3-1-1 policy for carry-on bags. From what you need to know about TSA's liquid ...