Nautical and signaling apparatus and instruments, namely, electric street signs for busses, trains, and metro; Audiovisual next-stop information devices, namely, electronic display boards and liquid crystal displays; computer operating systems for transportation hubs, the systems comprised of software for monitoring the arrival and departure of transport carriers; hardware for monitoring refueling, electric signs, indicators that identify arrival and departure gates at transportation terminals, and computer displays for transportation ticketing and booking offices; electronic display screens for monitoring traffic; vehicle traffic signals; computer operating systems comprised of sensors and visual displays for providing parking information; electronic display screens for monitoring the arrival and departure of transport carriers; electronic signs and display panels for use in shops and in shop windows for use in displaying information; audio speakers; electric signs and displays for sports