Section 635.417 - Convict produced materials(a) Materials produced after July 1, 1991, by convict labor may only be incorporated in a Federal-aid highway construction project if such materials have been: (1) Produced by convicts who are on parole, supervised release, or probation from a prison or(2) Produced in a qualified prison facility and the cumulative annual production amount of such materials for use in Federal-aid highway construction does not exceed the amount of such materials produced in such facility for use in Federal-aid highway construction during the 12-month period ending July 1, 1987.(b)Qualified prison facility means any prison facility in which convicts, during the 12-month period ending July 1, 1987, produced materials for use in Federal-aid highway construction projects.53 FR 1923, Jan. 25, 1988, as amended at 58 FR 38975, July 21, 1993