According to the flight school operator, the solo, student pilot was directed by air traffic control to taxi via taxiway Charlie and the inner ramp to the parking area. A fence construction company truck was parked on the edge of the active taxiway while the personnel inside the truck were having lunch. As the pilot taxied the airplane past the truck, while on the yellow taxi line, the left wing struck the upper cab of the truck. The pilot reported that she did not see the truck prior to the collision and it was parked in the shadow of a building. A Federal Aviation Administration inspector reported that the collision resulted in substantial damage to the left wing. The student pilot did not report any mechanical problems with the airplane at the time of the accident. FAA Advisory Circular 91-73B, which provides guidance on single pilot taxi operations, states, "Situational Awareness (SA). When conducting taxi operations, pilots need to be aware of their proximity to other aircraft and vehicles moving on the airport."