Letter of the Day: Work zone limits require some logic

Work zone limits require some logic
I have no issue following the law in regards to safety in work zones. I have issues with a couple things around this, though.
Why set up a 60 km/h zone as far as five kilometres from the actual work? Why not cover up all signage at the end of the work day where there is no safety issues to workers gone home for the day? I have seen situations where all but one sign was covered up at end of day and it is confusing to motorists.
Signage with work adjacent to the