In substantial part definition
In substantial part means that the motor vehicle or trailer for which exemption is claimed actually crosses Washington boundaries and is used a minimum of twenty-five percent in interstate for hire hauling.
In substantial part means that the motor vehicle or trailer for which the exemption is claimed actually crosses Washington State boundaries and is used a minimum of 25 percent in interstate hauling for hire.
In substantial part means that the motor vehicle or trailer for which exemption is claimed actually crosses Wash- ington boundaries and is used a minimum of twenty-five per- cent in interstate for hire hauling ((for hire)).