А вот, кстати, интересный документ - внутренняя полицейская
инструкция по тому, как работать с превышениями скорости.
(В сторону РД) вот так надо публиковать информацию :-)
Несколько цитат:
"however, when the limit is confusing or unclear it will not be routinely enforced"
"speed enforcement is expensive; it is both time and resource intensive and competes with other important policing issues of equal public concern. Enforcement is mainly reactive and should not be seen as preventative measure to achieve vehicle speeds"
"speed restrictions must be clear, appropriate and with the need for compliance obvious to all road users as this will result in the majority compliant"
"mass defiance identifies questionable limits which maybe in inappropriate areas, ... the limit should be reviewed"
Почитайте, там просто кладезь житейской мудрости :-)
Darsh