Good start but expect an idiotic implementation, no less.
This is a friend who got picked for doing 81km/h in a 80km/h zone! I believe even the US permits 10-15% uptick on the prevailing speed limits.
The way this will work is an automated money making machine. There is a stonewalled redressal mechanism.
I think the loss of 20k lives may not have been due to speeding. Here's the order of importance of reasons why road fatalities are high:
1) Road design and quality:
Our highways are simply not designed for public safety, they are designed based on availability of land for acquisition and thereafter pasted with a black top or concrete to let people drive on it. Absolutely zero thought has been invested in choosing the alignment, placement and quality of roads. I can write a photo essay on this but will need 200 different pictures to upload and it's cumbersome.
Which developed nation has road junctions on a dual lane carriageway for cross traffic? Pune - Bangalore stretch has 100s of those.
Which developed nation has speed breakers on the highway?
We have them with camouflage enough to mask them.
Potholes?
Less said the better. The current state of a 1 year old highway around Pune can compete with craters on the moon.
2) Service roads in Maharashtra:
Everyone knows what a blissful world the KA section of the Pune - Bangalore highway turns into.
Why?
Because they have service roads for villagers. Their then govt thought it was prudent to have a longer use thought. Heck, even villages are cleanly bypassed and there is barely any villager trying to cross the highway at 20km/h with a family of 5 on his Splendour.
3) Free parking on the highways:
MH has a ton of spots between Pune and Kolhapur that have double parked buses to pickup passengers. These passengers also cross the highway on foot. A car that could be well under the speed limit could hit these folks.
4) Tractors:
Tractors with double and triple stacked sugarcane trolleys often trudge the highways in MH at anywhere between 5-30km/h. These trolleys snap and become projectiles toward traffic and cause severe crashes.
I could go on and on but in essence, I disagree that all loss of lives in those 20k incidents are due to speeding and speed cameras will help curb deaths.