What Is That For???(updated)

Many of you sure same same like me every time wondering what are the post use for!!! Look like a electric wire across the road from the left to right but also madam like wire saja!!! 
It really bother me for few months already there when every time I drive down to Seria I saw this thing on the highway to Tutong there. Now is getting closer and closer to Jerudong already yet I still don't know what is that or what are they doing with it!!
I have ask many people they also don't know spa tu!!! last last I tak tahan and need to post in my blog to ask you guys. Please share share this info with us here in the chat box or comment in the Facebook. Thanks Bruther!!!!