live rail
Powered subway line
A live rail is a rail in an electric railway system that carries current to power trains, as opposed to the running rails that support the wheels.
Contact with a live rail can be fatal, which is why railway safety warnings emphasize staying off the tracks: The third rail is the live rail—never touch it.
Death from electrical current
- fatalCausing death or ruin
- lethalCausing or capable of death
- shockViolent sudden disturbance
- deathCessation of life
hazard · risk · injury · accident · warning · prohibited · trespassing · peril
One who directs musicians
- voltageElectrical potential difference
- currentDirected flow of charge
- DCUnidirectional electrical flow
- collectorOne who gathers items
contact · insulator · gap · ramp · bonding · substation · feeder · sectioning
Careful attention to risk
- insulationThermal transfer prevention
- barriersThings blocking access
- fencingCombat with blunted blades
- signagePosted public displays
awareness · vigilance · precaution · protection · grounding · lockout · isolation · trackworker
electrocution
Death from electrical current
death · hazard · risk · injury · accident · warning · prohibited · trespassing · peril · unsafe
conductor
One who directs musicians
- voltageElectrical potential difference
- currentDirected flow of charge
- DCUnidirectional electrical flow
collector · contact · insulator · gap · ramp · bonding · substation · feeder · sectioning
caution
Careful attention to risk
- insulationThermal transfer prevention
- barriersThings blocking access
- fencingCombat with blunted blades
signage · awareness · vigilance · precaution · protection · grounding · lockout · isolation · trackworker · possession
metro
Urban rail transit
- subwayUnderground transit passage
- undergroundBelow ground or countercultural
- tubeHollow cylindrical passage