Hello, When I couple some freight cars to a loco, I never know if they are air or vacumm brakes fitted. Is there a way by some plate board on the freight car body to indicate which type of brake the wagon is fitted ? Or does this feature is mentionned on the manual for each freight cars provided as DLC ? i.e. on a consist with several Postal Mail / News paper I never know if the wagons are air or vacuum brakes fitted althought they are similar to coaches wagons so I'm thinking they are considered like air passengers brake fitted but I could be wrong. Is there a general rule to know what type of freight wagon are only with vacuum and others with air brakes fitted please ?