in the US they are concentrating on convincing the driving public of the dangers of construction zones
Work Zone Safety - FHWA Facts and Statistics - FHWA Work Zone Worker Safety - FHWA Work Zone
usually speed drops from the max ( 70 - 75 mph ) down to as low as 40 mph
fines double
mandatory punishments imposed if a driver injures or kills a worker
not to mention what would happen to the driver, passenger ( s ) and the vehicle being driven if it collides with a piece of construction machinery
many times roads are closed with detours, or only one lane of a multilane road is open, with or without using the shoulder of the road way, or traffic is diverted to the other oncoming traffic side and you end up with driving with opposing traffic in the next lane
very dangerous occupation, working road construction while a road is open to traffic and moving traffic at high speed wiz by inches away from the worker and/or machinery