Left turn when general green but arrow is off

[citizengeorge]

http://midimagic.sgc-hosting.com/leftphas.htm

If the Green going left is not lit, do not turn left as the vehicles on the other side is GO. There is also a MAPSA always waiting at Paseo de roxas..

This is exactly what I'm talking about. The most rational, and international, rules, perhaps even default national rules in the Philippines, is stating the left turn arrow is permissive. It is completely absurd that MAPSA can make a rule that goes against that.

Any idea where I can find that exact phrasing? That left turn on left off is an illegal turn?

Thanks!