(12 Oct 2018, 11:10 pm)Andreos1 wrote Also used for HGV's where distances don't count, but hours do. 
As well as the digital version mentioned, there's the older analogue version with times/speeds marked on a paper disc. Although I believe vehicles manufactured post 2006 have digital fitted rather than analogue.

Nobody uses paper methods anymore, it's about as useful and novelty as a floppy disk. Folk law teaches you had to take a bag full of them in case one got dirty. Still for some unexplainable reason, it features prominently on DSA revision material, probably as high as digital tachographs and safety material.

I thought they would want us to be more focused on keeping calm and adapting to situations than having full knowledge on which traffic wombles can do what to a piece of paper (that we're less likely to ever see), but I don't write the rules.

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