Assembly Bill 203 aims to limit the liability of manufacturers, distributors, sellers, installers, and owners of traffic control devices in Wisconsin. The bill stipulates that these parties are not liable for damages resulting from the design, manufacture, distribution, or installation of a traffic control device, provided that the device complies with the specifications outlined in the traffic control devices manual adopted by the Department of Transportation and operates as intended. Additionally, the bill establishes a rebuttable presumption of compliance, meaning that if the involved parties can demonstrate adherence to the applicable standards and guidelines, they are presumed to have complied with the manual's specifications.

The limitation of liability applies to claims for personal injury, property damage, or other losses related to the use of traffic control devices, including allegations of negligence, strict liability, and breach of warranty. However, this protection does not hold if the claimant can prove that the traffic control device did not comply with the established specifications or operate as intended at the time of the incident. Overall, the bill seeks to provide legal protections for those involved in the traffic control device industry while ensuring accountability in cases of non-compliance.