Four major U.S. airports plan to speed up security checks by automating the distribution of bins for travelers’ carry-on bags, the U.S. Transportation Security Administration (TSA) and American Airlines Group Inc said on Tuesday.

American’s hubs in Los Angeles, Chicago, Dallas/Fort Worth and Miami will open the automated lanes this fall, which are expected to decrease wait times by 30 percent, the airline and TSA said in a joint statement.

Long security lines at U.S. airports this spring caused thousands of travelers to miss their flights and prompted criticism of TSA by airlines and other industry groups.

In an interview last month, American’s CEO Doug Parker said the world’s largest airline was working with airports to roll out the faster lanes, already in place at rival Delta Air Lines Inc’s Atlanta hub.