It's not so much the law, but whether anyone is actually interested in enforcing the law.
I have a Dash Cam installed in my car, primarily to protect me should I be involved in a collision or witness an accident, giving me CCTV footage to back any claim.
Over the last year, I have witnessed two major incidents where another motorist has almost caused a collision, the worst being the Porsche driver overtaking a line of traffic at high speed (we were doing 60 mph in NSL, and I estimate his speed in excess of 100 mph, as he left us standing and disappeared up the road at a rate of knots). Oncoming vehicles were being forced to swerve on to the hard shoulder.
Now you would think that the Police would be interested in that bit of bad behaviour, especially when it is caught on CCTV, wouldn't you? Obviously not...
They sent me a form to fill in, and it asks a number of questions, which it states, 'If you cannot answer yes to all these questions, a prosecution is unlikely'.
One of those questions states, 'Do you have independent witnesses to verify your statement?'. How on earth do you get an independent witness when you are travelling at 60 mph. Are you expected to brake hard, jump out and ask the dog walker if he just saw a car speeding at over 100 mph?
The fact is that the Police have engineered their reporting system to put people off reporting incidents. Unless there is a collision, injuries to persons or even death, the Police just aren't interested.
I have given up reporting to the Police now. Two forms have been thrown in the bin, and even calling 101 to report a neighbour's burglar alarm going off met with a indifference, basically being told that unless I could spot someone scrummaging around the vacant property, they couldn't be bothered to attend.
Policing in the 21st century has definitely taken a nose dive.
As for laws, why make new ones if no one is going to police them? The reason so many people flout laws is because they know that they will get away with it.