ITN News
| May 21, 2013
It's often nice to be close to transportation but few would choo-choose to live just feet from train tracks. Residents of this Vietnamese village vanish inside their homes twice a day to avoid accidents when the train comes speeding past their doors.
ITN News
| Apr 24, 2013
In a heart-stopping CCTV video taken at a Medillin metro statio a quick-thinking Colombian cop suddenly turns, grabs and saves a man about to leap in front of a speeding train. The officer can then be seen to be talking to the would-be suicide, th...
Sky News
| Jan 22, 2013
Security cameras recorded the heart-stopping moment when a 51-year-old woman fainted and tumbled onto the tracks in Madrid's metro system. An off-duty police officer raced to save her as passengers signaled to a train driver to stop, and the woman...
Telegraph.co.uk
| Oct 31, 2011
Amateur video has captured the huge fire caused by a collision between a train and a fuel tanker in the Sabah province of Malaysia. The accident happened when the tanker was trying to cross train tracks.
— last Monday at 01:44 pm
...stations in Ahmednagar district of Maharashtra. They are both at the same location on the railway route, but on opposite sides of the track. Ind...
— last Tuesday at 04:44 am
— last Saturday at 08:20 pm
...More than 60 people were hospitalized Friday night after an eastbound commuter train derailed and collided with a westbound passenger train on a...
— May 13 at 09:17 pm
...which is designed to create multilevel layouts. To set the Guinness World Record, Moreno’s track had to be at least 9 feet 8 inches tall and a t...
— last Friday at 08:56 am
...footage captures the moment a pram rolls to the edge of a train platform, hurling the 14-month-old girl inside onto the track. The child's mothe...
In the mathematical area of topology, a train track is a family of curves embedded on a surface, meeting the following conditions:
⁕The curves meet at a finite set of vertices called switches.
⁕Away from the switches, the curves are smooth and do not touch each other.
⁕At each switch, three curves meet with the same tangent line, with two curves entering from one direction and one from the other.
The main application of train tracks in mathematics is to study laminations of surfaces, that is, partitions of closed subsets of surfaces into unions of smooth curves. Train tracks have also been used in graph drawing.
(via Freebase)
