An arbitrary state regulation is one that lacks a reasonable justification and is not based on sound evidence or rationale. It conflicts with due process because it can infringe upon individuals’ or entities’ rights without a legitimate government interest or compelling reason. Due process requires that laws do not unnecessarily restrict legal rights or operate under assumptions that are not evidentially supported.
For example: A state law prohibits the sale of all red cars claiming they are more prone to accidents, without any statistical evidence supporting such a claim. This would likely be deemed an arbitrary regulation as it has no rational basis and restricts the right to sell personal property.