Wis. Admin. Code § Trans 305.50
The bed or body of a trailer or semitrailer may not contain holes, cracks or other openings which would allow the vehicle contents to drop, leak or spill upon the highway.
History: Cr. Register, February, 1996, No. 482, eff. 3-1-96; am. Register, October, 1997, No. 502, eff. 11-1-97.