Juddian:
Job takes as long as it takes, you cannot operate lorries on anything other than direct trunking work to any sort of meaningful timetable
You can’t even do that. Doing a changeover at Ecclefechan I can get there at any time between 11pm and midnight. My return trailer might be there when I get there, it might be after 2am when it turns up.
The only thing that’s guaranteed in this job is the start time of day 1.