Details.
Transportation Vouchers can be redeemed while making a reservation on Amtrak.com by selecting Transportation Voucher as the payment method. Multiple vouchers may be applied to a reservation, and vouchers may be used across multiple reservations. Transportation Vouchers can only be used once, and any unused amount is forfeited. The person named on the voucher must be one of the traveling passengers, the reservation name must exactly match the voucher name, and vouchers expire one year from the date they are issued.