As has been stated, though, simply saying there have been 273 crashes by itself means nothing. If I said to you "following the introduction of a new drug there

As has been stated, though, simply saying there have been 273 crashes by itself means nothing. If I said to you "following the introduction of a new drug there have been 1000 heart attacks in the USA this year so far", you may think, shit, 1000 people have had heart attacks, but when you realise that there are 800,000 heart attacks per year in the USA, making it about 400,000 pro-rata for June, reducing that down to 1000 would be amazing. So, 273 crashes. But what would that figure be without the system? We need the data to compare this to groups of drivers who don't use these systems. Otherwise, it's meaningless. The numbers are meaningless. Like values without units.