Washington Revised Code Title 46. Motor Vehicles § 46.74.030. Operators

The operator and the driver of a ride-sharing vehicle shall be held to a reasonable and ordinary standard of care, and are not subject to ordinances or regulations which relate exclusively to the regulation of drivers or owners of motor vehicles operated for hire, or other common carriers or public transit carriers.  No person, entity, or concern may, as a result of engaging in ride-sharing promotional activities, be liable for civil damages arising directly or indirectly (1) from the maintenance and operation of a ride-sharing vehicle;  or (2) from an intentional act of another person who is participating or proposing to participate in a ride-sharing arrangement, unless the ride-sharing operator or promoter had prior, actual knowledge that the intentional act was likely to occur and had a reasonable ability to prevent the act from occurring.