6hr break rule?

A bit of ambiguity regarding the 6 hour rule.

The DofT guidance is ambiguous because there is a situation where you have to take 1 hours rest if you exceed 9 hours at work not 45 mins even though you don’t reach 9 hours driving and that is where a gap between breaks is greater than 6 hours.

I couldn’t understand why this was flagged up in some tacho analysis. The DfT advice should be amended to reflect that perhaps along the lines during a working day no period of 6 hours shall be worked without at least a 15 minute break is taken.

At present it reads as if if your day is between 6 and 9 hours take a 30min WTD break and if it is over 9 hours a 45 minute break. The ambiguity is the statement 45 minute break if working more than 9 hours in total.