Remote monitoring and control systems for locomotives and engines comprised of computers, telecommunication equipment, locomotive control computers, electronic measuring devices for measuring locomotive and engine operation conditions, electronic sensing devices for sensing locomotive and engine operation conditions, computer software, operator user interface computer, cellular modems, digital cellular modems, analog cellular modems, LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, wireless LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, global positioning systems, equipment for communication with cellular system providers, mainframe servers with web based applications and databases for use in monitoring and control of locomotive and engine operation; event recording systems; electrical and electronic management apparatus and systems for the management of locomotives and engines; electronic measuring, sensing, recording, signaling and warning apparatus used in operation of locomotives and engines; global positioning system; computer software for use in electrical and electronic monitoring systems, management systems, operation systems and control systems in the field of locomotives and engines; electrical and electronic control apparatus and systems for the control of locomotives and engines, namely, computers, telecommunication equipment, locomotive control computers, electronic measuring devices for measuring locomotive and engine operation conditions, electronic sensing devices for sensing locomotive and engine operation conditions, computer software, operator user interface computer, cellular modems, digital cellular modems, analog cellular modems, LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, wireless LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, global positioning systems, equipment for communication with cellular system providers, mainframe servers with web based applications and databases for use in control of locomotive and engine operation; electrical and electronic monitoring and switching apparatus and systems comprised of computers, telecommunication equipment, locomotive control computers, electronic measuring devices for measuring locomotive and engine operation conditions, electronic sensing devices for sensing locomotive and engine operation conditions, computer software, operator user interface computer, cellular modems, digital cellular modems, analog cellular modems, LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, wireless LAN devices, namely, switches, routers, firewalls, hubs, gateways and repeaters, global positioning systems, equipment for communication with cellular system providers, mainframe servers with web based applications and databases for use in monitoring of locomotive and engine operation, event recording systems; parts and fittings for locomotives and engines