welbeck
it is improper use of the headlamps; same as sounding the horn, only proper use is to make other road users aware of your presence.
not of any other presence.
Flashing headlights, as you say according to the Highway Code are only to be used to let other road users know you are there, but seem to be used to covey all sorts of messages these days, including intimidating other drivers. I guess we have all been guilty of misuse of flashing lights but not of intimidating hopefully!
I don’t think warning about speed traps poses a moral dilemma to me, I just wouldn’t do it. I am always surprised how relaxed some are about speeding, and do not consider it a serious offence.
Cameras are not used as some believe be “money making devices” but placed, or used, where there is an hazard and also where there have been accidents including deaths. They are not used randomly.
Last year 29,429 people (including 1,633 fatalities) were killed, or seriously injured in road collisions in UK Many as a result of excess speed. In comparison there were 602 homicides (England and Wales) if as many were killed or seriously injured through violent crime, there would be much more of an outcry, but we seem to accept it.