What causes sparks on train tracks?
The passage of the current leads to ionisation of the air, i.e. a modification of the electrical charge of the atoms present in the air, which are no longer electrically neutral. It is this reaction that creates a spark, known as an “electrical arc”.
Why do they light train tracks on fire?
Fire solves a big problem for the commuter trains. Ice accumulates and freezes even more quickly on metal tracks because of the way metal holds cold temperatures.
What do flashing lights mean at a railway crossing?
Active railway crossings are equipped with flashing lights and bells to warn you about approaching trains. Stay behind the stop line, or no closer than 5 metres from the nearest rail, and wait for the train(s) to pass.
Why do we see sparks?
Streaks or specks of light in your vision are described as flashes. They can happen when you bang your head or get hit in the eye. They can also appear in your vision because your retina is being pulled by the gel in your eyeball. Flashes should be taken seriously if you’re seeing them frequently.
What does a pantograph do?
Pantograph, instrument for duplicating a motion or copying a geometric shape to a reduced or enlarged scale.
How do they keep snow off railroad tracks?
Most modern railways today use modified ballast regulators, a piece of track maintenance equipment normally used to grade and groom the track ballast. Called snow fighters, they have snow blows, wing blades, and snow blowers. Track section crews use them to clear tracks of snow when too much accumulation builds up.
What to do if someone falls on train tracks?
Talk to them from a distance before trying to approach. Don’t go on the line yourself. If the person is conscious and willing to get back off the track, by all means reach down and help them back onto the platform, but only after looking both ways for oncoming trains.