Why Traffic Police's investigation gather no conclusion?

LTA had confirmed that Roundabout Rules Diag 3.18 for turning  is applicable to Pandan Circle and refereed me to seek enforcement action from Traffic Police.

Yet TP took 2 months to investigate and replied their investigation gathered no conclusion.

After many emails appealing TP to investigate , TP replied that they need me to produce new evidence such as  "INDEPENDENT EYE WITNESS" in order to continue investigation.

My video already shown his car in the wrong lane, the argument with NTUC Income is whether his car should be on the inner or outer lane when he intend to turn-right at the roundabout. NTUC and FIDREC insisted outer lane is ok, I insisted it must be inner lane as according to the rule in the diagram. I just need TP to confirm and take action.

Where to find this independent eye witness? What is the purpose of having this eye witness in this dispute?
On the other hand, can motorists caught speeding by speed-camera insisted TP to produce independent eye witness first or else they not going to pay the fine?

Therefore is it going to FIDREC  a trap?

It appear to be a harmless & economical route to seek FIDREC help as consumer can just reject their decision if unsatisfied. However consumers are unaware that most government agencies will just accept FIDREC adjudicator's decision regardless if it is right or wrong, they seem to gang up!

Is NTUC Income/ FIDREC method of investigating traffic accident correct?
They use their opinion rather than rules to determine the case.
I produced video evidence and highway code rules to support my case while they just produced "their opinion".
Thankfully LTA had enhanced Pandan Circle lane's marking according to roundabout rules which proved "their opinion" was wrong!

General Insurance Association of Singapore created this Barometer Of Liability Agreement which NTUC Income used it on me.

I told GIA this 13b is in contradiction with the Highway Code Roundabout rules.
They replied that this agreement is only use among insurance companies and policy holder are not bound by it and any dispute can go to FIDREC.

Is our  motor insurance industry controlled by "gangster"?
What can you do when you are being bullied by insurance company/ FIDREC?