Providing on-line non-downloadable software for use in tracking, monitoring and managing field assets, including, but not limited to, vehicles, construction and agricultural equipment, over computer networks, intranets and the internet; providing on-line non-downloadable software for use in tracking costs associated with field assets, including, but not limited to, construction paving, quarry, mining, forestry, waste equipment, tractors, combines, and motorized vehicles, for the purpose of generating cost estimates and bids; providing on-line non-downloadable software for use in remotely securing construction equipment and vehicles from unauthorized or hazardous use, and for use in preventing collisions between construction equipment and vehicles, and preventing contact between construction equipment and vehicles and underground utilities