Flashing signals

[ToniBabelony]

Mr. Ochanomizu,

 

It could also depend on the type of lamp used, LED or a classic bulb. Could you provide some reference for this? I tried to find some with my limited Japanese skills, but failed to find any. Thank you in advance!

[westfalen]

To add a bit more credence to the theory that it is caused by the camera I've had a look at the video taken by my friend Dave at Higashi Monzen, also out of the front of the train but from a slightly different viewpoint looking over the drivers shoulder, and the signal does not fade in and out.  According to the details of the video file his camera, a Sony SLR, was set at 50 fps which would match the 50hz of the local power supply while my Sony video camera was recording at 25 fps.

 

Further support of the camera being the cause is that both Dave and I are both train drivers, so when we look out of the front of a train the things we notice most are the signals and in fact all the way through the trip we had been commenting to each other about various signals we had spotted but neither of us noticed these two pulsating signals.

Edited January 21, 2014 by westfalen