What is illegal in a motor vehicle on a highway regarding open containers of alcohol?

In Washington State, it is illegal to possess open containers of alcohol in the passenger compartment of a motor vehicle on a highway, regardless of whether you are driving or not. This law is in place to promote safer driving conditions and reduce the potential for impaired driving. Open containers can include any bottle, can, or similar receptacle that has been opened and contains alcohol.

The intent behind this regulation is to minimize the risk of distractions and the temptation to consume alcohol while in a moving vehicle, which can lead to impaired driving and increase the likelihood of accidents. This law applies to all occupants of the vehicle, reinforcing the idea that the presence of alcohol can pose a risk to road safety.

Other choices describe scenarios that misinterpret the regulations. Drinking while not driving or transporting open containers legally in the passenger compartment contradict the legal standards established to maintain public safety on the roads.