W. Va. Code § 24A-5-1
The commission shall have power to originate, establish, promulgate, change, investigate and enforce tariffs, rates, joint rates, classifications and schedules for all motor carriers, except urban mass transportation authorities established and maintained pursuant to article twenty-seven, chapter eight of this code, and the practices, services and facilities of all motor carriers. And whenever the commission shall, after hearing, find any existing rates, tariffs, joint rates, classifications, schedules, practices, services or facilities unjust, unreasonable, insufficient, or unjustly discriminatory or otherwise in violation of any of the provisions of this chapter, the commission shall, by order, fix and require reasonable rates, joint rates, tariffs, classifications, schedules, practices, services or facilities to be followed or established in the future in lieu of those found to be unjust, unreasonable, insufficient or unjustly discriminatory or otherwise in violation of any provisions of law.
W. Va. Code § 24A-5-1