1 full time job, and part time driving job

It wouldn’t make a difference if you went straight from work to driving the tipper, or took a sufficient rest period after work beforehand, as long as both jobs were completed within 13 hours of starting whichever came first, although this could be extended to 15 hours three times a week. This is to allow the legally required 11 hours of daily rest, reduced to 9 upto 3 times.
For example, you could start your job at 14:00, work for 8 hours including a break, taking you to midnight, you would then be able to work on the tippers for 5 hours, extended to 7 hours three times a week, so would have to finish by 05:00 or 07:00 respectively.
Also you would need to keep all working times of your normal job in a diary or something similar to keep records of your working time so you could show if pulled that you are complying with WTD rules regarding number of hours worked in a day and also your weekly hours, as this can’t average more than 48 hours after all breaks are deducted

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