The airlines require that we use carry-on luggage that fits into a box provided to measure them [“Carry-On Regulations May Leave Travelers Holding the Bag,” Travel Insider, Dec. 12].

However, when you try to put your bag in the overhead racks, you find that another traveler’s luggage is so large that there isn’t room for yours. It would take little effort for the

airlines to have luggage compartments lettered A, B, C, D etc., so you can put your bags into compartments that correspond with the seat letter. C.A. Hartman Mission Viejo Send letters to

Travel, L.A. Times, 202 W. 1st St., Los Angeles, CA 90012; fax (213) 237-7355, e-mail travel@ latimes.com. Include your name, address and phone number. MORE TO READ