Flight attendants working for domestic airlines staged a joint campaign Wednesday to publicize new industrywide regulations on the size and weight of carry-on baggage at Tokyo's Haneda airport.

The new rules go into effect in December.

Attendants passed out fans with the size limits and showed passengers the maximum dimensions and weight of carry-on baggage.

Each airline currently applies different baggage rules for different aircraft, which has confused passengers who use different types of planes for outbound and return trips.

Under the new common regulations that will be shared by 17 carriers, carry-on bags must weigh no more than 10 kg and be no more than 45 cm tall, 20 cm wide and 35 cm deep for a plane with less than 100 seats. For larger aircraft, the dimensions are 55 × 25 × 40 cm.

Carriers covered by the new rules include Japan Airlines Corp., All Nippon Airways Co., Air Do, Skynet Asia Airways and Skymark Airlines Inc.

"If the regulations are unified, it will promote smooth boarding and airplanes can depart on time. As a result, it will benefit passengers, too," a JAL spokesman said.