Thing is, many fleet owners already have this running for yearsss, with the advent of modern electronically controlled turbo diesel engine. They can even monitor the amount of diesel in the fuel tank, to detect pilferage of diesel fuel, unscheduled stops etc etc.

Black box, speed limiter, etc will not stop or reduce road accident in this country.

so this year already introduce, extra complaint sticker, extra side reflectors 6pcs, puspakom strict checks on tyre treads, SST on logistics charges. now put speed limiter

ok whats next?

what about passenger cars who drive 200kmh and act like they own the highways

Yup... should bring forth all the protected lords behind these big company to jail. Then we might see some changes. 

99% Limiter will spoil and company not repairing.
Your problem is with enforcement.

And why is limiter and not GPS tracking by company or even JPJ ?

The driver not stupid
They can remove it
And pasang balik when it’s for inspection

what about passenger cars who drive 200kmh and act like they own the highways

For bus, just do collaboration with redbus and easy book. Bus user can crowdsource GPS speed info from their phone at the exact bus ride time. If exceed speed, Redbus auto report to JPJ and alert user when buying ticket that this bus drive recklessly

Last month I took express bus from Kanazawa to Kyoto.

260km, bus stopped twice at R&R, each time 10 minutes.

Every stop, before passengers can go down, bus driver went down to place wheel stoppers on the front wheel. 

The ticket cost - RM150 (4 seats per row). Seat got safety belt & power plug.

If Msian bus could charge half the price, I guess the service quality could greatly improve.

But with RON95 at RM2.05, many will feel it's cheaper to drive 260km IF bus ticket gonna cost RM75/pax.