What if your van was at the exchange and you drove to pick it up? pay shouldnt start from home but should it start at the exchange or first job?
Then you'd be a 'yard parker' a completely different arrangement, and possibly not one open to those on the new contracts.
The answer is that the current system works well. You'll very rarely be in the same place every day, so 'swings and roundabouts' means it evens out.
I used to have to give five minutes (this was the agreed time it would take to travel to the nearest exchange on my managers patch) I have now moved completely out of area, and so now have to give thirty minutes travel. I 'plug in' (pick up my first job) at 7.00 and aim to be there for 8.00. I set off sometime between 7.15 and 7.30 dependant on where I'm off to. Traffic means that I don't always get on site bang on 8.00 but it is clear I have tried (trackers on the vans if no one has told you).
At the end of day if I receive a 'ring control' message (no job that is deemed do-able within the remaining time) with less than an hour to go to my rostered finish I can choose to travel home, when I get there I knock off my 30 mins agreed travel from my time sheet. Sometimes I might get stuck on a job and work on past finish time, this adds to my flex balance ....... sometimes it becomes clear that the task cannot be finished that day for various reasons and then you retain it overnight.
This is not a role for clock watchers or those who believe that they should finish work bang on time every day. But the system works fairly well and provides flexibility for both the staff and the company at various times.
Oh, and if you absolutely cannot be late finishing on a certain day, you text a code in and work allocation will not issue work that that on paper might
take you past your end of day.