There’s 2 parts to the wtd breaks.
-
The 6 hour rule
you can’t work more than 6 hours at any point without a 15 min break, a break of 15 or more allows you to work upto another 6 hours before needing another 15 min break. This works the same as driving 4.5 hours and a 45. (Only driving and other work count as working time) -
The total break
This is dependent on the total amount of working time in the shift, only driving and other work count as working time for the wtd.
0-6 hours of working time = 0 break required
Over 6 but not over 9 = 30 mins of break/s
Over 9 = 45 mins of break/s required.
A shift can only be have 1 of the 3 apply, so ignore the other 2
Breaks can be taken anywhere in the shift to count towards the total required, except the very beginning or end of the shift, so each break must have at least 1 min of work either side of it and they must be at least 15 mins long to count.
The 6 - 9 and 9+ are purely used to determine how much break is required in total and are nothing to do with when any breaks are required.
So anyone who drives over 4.5 hours in a shift will have a 45 for that and tick the total break box for any shift, so all they’ll need to worry about is the 6 hour rule.
This is the extreme example of what is legal
Work 6
Break 15
Work 6
Break 15
Work 2:14
Break 15
Work 1 min