United Airlines is testing a program in Los Angeles in which travelers can reserve a set time to go through a special Transportation Security Administration security lane.

The carrier is reaching out to travelers with reservations through its terminal at Los Angeles International Airport to participate in its “LAX Fast Lane” pilot, in which travelers reserve a 15-minute window, occurring at least an hour before their departure time, to go through security. At the airport, agents will confirm the appointment via QR code, giving the traveler access to the reserved lane.

For the trial period, the lane will be accessible between 6:30 a.m. and 1 p.m. Travelers can make their reservation within 24 hours of departure.

United is conducting the pilot program with Los Angeles World Airports, which owns and operates LAX. LAWA CEO Justin Erbacci in a statement said that “a service that allows our guests to know exactly when and how long it will take to get through airport security is a compelling service that holds great potential for busy travelers.”