tachograph:
I’ve never known a driving assessment not to take you onto a public road so unless these driving assessments are a bit unusual they will be in-scope of EU regulations so you’re right to book the last Saturday off.Driving assessments can be quite short but I’m making the assumption that there won’t be a period of 24 hours rest between any of the shifts/assessments, obviously if it turns out that there is a rest period of 24 hours between 2 of the shifts it changes everything, but as you don’t know the start/finish times of any of the shifts I’d say you’re right to play safe and book the Saturday off
Still leaves sunday to saturday inclusive so could easily breach the 144 hour rule