11.0 Quality of Design and Construction:

11.7Wear Surfaces:

The major consideration in Grid dependability is the design and maintenance of a Grid vehicle=s Thrust Plate, failure of which could leave traffic along an entire Main Grid Rail, at a dead stop. High strength plastic friction strips which center a vehicle on the Grid rail in the event of a tire or electric motor failure must be monitored and inspected at regular intervals. To the extent possible, sensors will be installed to recognize a deteriorating condition of any necessary component of a Grid compliant vehicle.