The u-shaped assembly line balancing problem (UALBP) differs from SALBP only by a different interpretation of precedence constraints. So, the SALBP data sets can be applied for testing algorithms for UALBP, too.

Here you can download some results of UALBP-1 (for the old SALBP-1 data sets) obtained by ULINO as described in Scholl and Klein (1999).