My point about the guillotine was the perception of the experienced user, and the casual observer - the latter not appreciating the safety which is in place, but noticing only the apparent danger because of the noise.
I would prefer if drivers were better trained than merely rely on cones.
I have seen too many scattered to have any faith in them!
Unfortunately, the government seems hell bent on trying to rely on cameras, yellow lines, flashing signs in VSL areas, and less and less on instilling common sense in drivers.
If the danger posed by the trucks passing 3 metres away was too great, and no measures were in place to prevent an accident, I doubt you would be on site. But dont you think if drivers uderstood your position better, they would be more considerate?
My driving behaviour was influenced by public information films on TV - repeated often enough, and with real skills to learn - not just slick warnings about what happens when you have no skills, and are confronted with a situation such as a pedestrian staggering off the kerb in front of you. TV is a powerful tool, but as a road safety tool, it is so underused.
Why spend money when a "safety camera" can earn some, and the PUBLIC think they are doing a great job.?
You obviously know differently, since you prefer a proper police

presence!
Whilst I slow down for horses etc. I appreciate that there are many who do not - but what are they doing about it?
