Tractor truck means every motor vehicle designed and used primarily for drawing other vehicles
Tractor means every vehicle designed, constructed
Diesel engine means an engine which works on the compression-ignition principle.
Contractor Equipment means all appliances and things of whatsoever nature (other than temporary works) required for execution and completion of works and remedying of any defects, therein. But does not include plant, materials or other things intended to form or forming part of the permanent works.
Contractor System means the information and communications technology system used by the Contractor in performing the Services including the Software, the Contractor Equipment and related cabling (but excluding the Authority System).