BOT is a PPP model where other than sharing the project cost with the Government, the private bidder has to build, maintain, operate and collect toll/user charge.
The bid is given to the private company offering to share maximum revenue from the asset to the government.
The private party covers“all risks” related to—land acquisition, construction (damage), inflation, cost overruns caused by delays and commercial.
The government is responsible for only regulatory clearances.