GREEN LIGHT

Hey ppl,
i know i mentioned this before but well, i still find it hard why certain traffic light for certain roads has no arrow to turn right or left. The thing was today i was driving on greenhill road... three cars in front of me couldnt make a right turn at the traffic light and caused of it, i waited like three turns of light! what a waste of time. I couldnt get into the other lane as it was busy and there were long queue of cars behind me that got into the lane and hence i couldnt turn. Hmm.. i am just thinking as it was a big road and very busy, they need to rethink about getting the arrow light. As it was weird, all the other sides have the arrow light apart from this. Hmm... wont make different just one more! hahaha well... i dont know... as this is not my area of experties. Anyhow, i just thought that i had to wait for like three lights turns was like hmmm.....