It is a shame that with both styles of tacho still being in equal existence (before analogue is completely lost) that training schools are only able to offer training on one type of tacho (to pass the test, should the tacho show me/tell me question arise). Alternatively, there are agencies around that will provide additional training to get you up to speed with what the logistics world is working with. I think I’m fortunate enough to have only had to use one type of tacho (found in volvos approx 10 years old), so I’m sorted for the time being and I can learn about digital tachos at a later date from drivers in the newer vehicles at work