Last Minute Risk Analysis. This motorway has been closed for maintenance this week. It's Just a small distance between two junctions. But it's also one of the busiest highways in the country...
I suppose these guides should be permanent at this ramp:
Step 1 - do I know what my assignment is?
Step 2 - what can go wrong, is there any danger?
Step 3 - what must be done to eliminate the danger?
Step 4 - take necessary measures in order to do your job safely
When in doubt, do not start! Consult your supervisor.