It wouldnt be so bad if they didint literally hide in the bushes, also they sometimes set up opposite the exit to my road and ive been waiting to pull in and I havnt been speeding and they stare at you like youre scum. Miserable *****
The thing with this is, they have no authority so what does it matter if they clock you? By hiding in the bushes they will get a true representation of the way people drive on that particular road. As Chris said earlier, if people are constantly speeding then traffic calming measures may get installed.
If by hiding in bushes and generally being 'miserable *****' they save the life of one child then to me it's worth putting up with.
I can put up with them but I dont like being glared at when ive done nothing wrong thats all and yes I agree about saving a childs live, as my brother was knocked down at that junction.
I'm sure it's nothing personal. They maybe like your car or think you have a funny haircut or something!