I dosed three times and 120 and up and didn't care.. 
Cars with no safety inspections and no safety equipment plus people never bothered to check the tyres and suspension and using " jogaar".., even 60KMH is also very high. And forgot to mention insurance.
Stay sticker to the one is posted as its a standard and have been posted after thorough evaluation .
Also to mention 90 percent or more accidents if highway like motorways where there is limited traffic .. Are due to speeding or dosing on the wheel plus poor conditions of vehicle itself.. And mostly a single vehicle involved.
Please follow speed limits.. 
My comment should be taken generic. Is not to target any one.. Thanks