Can I legally drive my hybrid car in the carpool lanes in Washington (WA), where I am the only passenger?

Question

CA allows hybrid car owners to apply for a program where they get a sticker to place on their hybrid cars so that they can drive on the carpool lanes whether they are accompanied by other people or not.

Does WA have something similar?

Answer 1

Not at this time. They are talking about doing it on State Hiway 167