Middle Ring Road - KL

If I say MRR2 or MIddle Ring Road 2, I beleive that most of Klang Valley road users will know where it is, or at least ever heard of it. 

How about Middle Ring Road 1? I beleive that most of us will blank a bit if somebody ask us of it. Is it exist?

I guess that MRR1 is a connection of most busiest road in KL. It is Jalan Tun Razak, Jalan Mahameru, Jalan Istana and back to Jalan Tun Razak. Am i right?? please correct me if I am wrong...