Metro’s board of directors is expected to approve Thursday a new travel policy at its end of the year meeting.

In the new policy, board members are told to take the “most cost-effective” route and will not be reimbursed for first class travel or hotel room service.

Among Metro executives recent trips, six of its top executives took a trip to Japan in February and March costing $10,114.60, according to records from Metro. Metro is buying new rail cars — the 7000 series — from Kawasaki.

Metro’s General Manager Richard Sarles spent $3,604.40 from June 2010 to March 2012 in travel, Metro records show. His travels included going to Boston, San Antonio and New Orleans, where he attended a transportation association’s meetings.