Washington Revised Code Title 69. Food, Drugs, Cosmetics, and Poisons § 69.50.382. Common carriers--Transportation or delivery of cannabis, useable cannabis, cannabis concentrates, immature plants or clones, cannabis seeds, and cannabis-infused products--Employees prohibited from carrying or using firearm during such services--Exceptions--Use of state ferry routes

(1) A licensed cannabis producer, cannabis processor, cannabis researcher, or cannabis retailer, or their employees, in accordance with the requirements of this chapter and the administrative rules adopted thereunder, may use the services of a common carrier subject to regulation under chapters 81.28 and 81.29 RCW and licensed in compliance with the regulations established under RCW 69.50.385, to physically transport or deliver, as authorized under this chapter, cannabis, useable cannabis, cannabis concentrates, immature plants or clones, cannabis seeds, and cannabis-infused products between licensed cannabis businesses located within the state.

(2) An employee of a common carrier engaged in cannabis-related transportation or delivery services authorized under subsection (1) of this section is prohibited from carrying or using a firearm during the course of providing such services, unless:

(3) A common carrier licensed under RCW 69.50.385 may, for the purpose of transporting and delivering cannabis, useable cannabis, cannabis concentrates, and cannabis-infused products, utilize Washington state ferry routes for such transportation and delivery.

(4) The possession of cannabis, useable cannabis, cannabis concentrates, and cannabis-infused products being physically transported or delivered within the state, in amounts not exceeding those that may be established under RCW 69.50.385(3), by a licensed employee of a common carrier when performing the duties authorized under, and in accordance with, this section and RCW 69.50.385, is not a violation of this section, this chapter, or any other provision of Washington state law.