signalmen
Tower lever operators
Signalmen is the plural of signalman—a person who operates signals, typically in railroad or military contexts.
Railroad signalmen control track switches and signal systems that direct train traffic.
Military signalmen transmit messages using flags, lights, or electronic equipment: The signalmen coordinated troop movements by radio.
Rail junction operator
- flagmanPerson directing traffic manually
- brakemanRail worker controlling deceleration
- trackmanRailroad maintenance worker
- yardmasterTrain depot manager
dispatcher · conductor · engineer · trainman · trackwalker · hostler · stationmaster · lineman
Flag-based signaling system
- telegraphyElectrical long-distance messaging
- flagsSymbolic national cloths
- lanternEnclosed portable light
- whistleShrill air-blown sounder
radio · wireless · transmission · lamp · heliograph · wigwag · token · staff
Art of choosing moments
- synchronizationAligning timing across systems
- schedulingAssigning times to events
- timetableArranged list of events
- dispatchingSending out promptly
routing · interlocking · clearance · sequencing · spacing · headway · orders · logistics
Range of clear sight
- vestSleeveless upper-body garment
- helmetProtective head covering
- lanternEnclosed portable light
- flagsSymbolic national cloths
warning · caution · hazard · protection · inspection · regulation · compliance · training
switchman
Rail junction operator
- flagmanPerson directing traffic manually
- brakemanRail worker controlling deceleration
- trackmanRailroad maintenance worker
yardmaster · dispatcher · conductor · engineer · trainman · trackwalker · hostler · stationmaster · lineman · gateman
semaphore
Flag-based signaling system
- telegraphyElectrical long-distance messaging
- flagsSymbolic national cloths
- lanternEnclosed portable light
whistle · radio · wireless · transmission · lamp · heliograph · wigwag · token · staff · message
timing
Art of choosing moments
- synchronizationAligning timing across systems
- schedulingAssigning times to events
- timetableArranged list of events
dispatching · routing · interlocking · clearance · sequencing · spacing · headway · orders · logistics · precision
visibility
Range of clear sight
flags · warning · caution · hazard · protection · inspection · regulation · compliance · training · vigilance
navy
Maritime military force
- fleetVehicles under unified command
- warshipArmed naval vessel
- battleshipArmored naval capital vessel
convoy · destroyer · cruiser · bridge · yeoman · rating · ensign · blinker · flags · pennant
- railroad jobsconductors, engineers, brakemen, firemen, switchmen
- signalersflagmen, flagman, flag wavers, telegraph operators, telegraphists
- naval personnelsailors, seamen, captains, admirals, officers
- enlisted personnelprivates, corporals, sergeants, specialists, recruits
- infantryfoot soldiers, foot soldier, rifleman, riflemen, infantryman
- naval ranksadmiral, admirals, captain, commodore, commander
signalmenpassengers
Transported travelers
engine drivers · train operators · conductors · motormen · engineers