Unusual circumstances, such as breakdowns and blocked trackage, called for these kinds of special transfers. The second type is especially interesting, as it served a triple purpose. A conductor could issue it with all three coupons, good to transfer to another line outbound; or with the first coupon removed, for another line inbound; or with both of those coupons removed, to the next car on his own line (“Car to Car”). Neither type is explicitly dated, but the triple-coupon type bears a letter code which was changed daily. This served to date the transfer sufficiently that a conductor would notice and reject an out-of-date transfer.