Physical Demands: Frequent: Sitting, standing, walking, climbing stairs and/or ramps, balancing, stooping, kneeling, crouching, crawling, pulling, pushing, reaching, repetitive hand motions, hearing, speaking clearly, visual acuity, distinguishing colors, driving, traveling. Valid Texas Class "B" or "A" Commercial Driver's License (CDL) with endorsements for school bus driver (persons hired with class "C" driver's license must obtain the class "B" CDL license with endorsements within 45 days of employment).