ok ,heres a scenario I aint sure about .drive 3.5 hrs -take 45min break . drive 4.5 hrs ,take 45min break and drive for 1hr .total hrs driven = 9hrs leaving 1hr driving time left .do I need another full 45min break before I take my option of a 10hr driving day ■■? its not a situation ive ever found myself in . but one day I might . 
thanks
syramax:
.do I need another full 45min break before I take my option of a 10hr driving day ■■?
No, the fact you’re taking this option doesn’t alter the 45mins after 4.5h driving rule.
thankyou gentlemen 
4.5 accumulated driving trigers a 45 min break … that’s all you need to remember really