The RRB survivor annuity consists of one or two tiers and, if the particular survivors
are eligible, additional annuity components may be payable.
The amount is based on the deceased's combined RR and SS earnings. It is generally
equivalent to the amount that would have been payable under SS. It may be reduced
for a survivor's entitlement to SS benefits payable on his/her own or any other person's
SS earnings record, or receipt of a government pension.