When you need a tachograph. You must use a tachograph if the vehicle you’re driving comes under EU or. rules. Find out if EU or. rules apply to the passenger carrying vehicle or goods vehicle that you’re driving.here are 2 types of tachograph-analogue and digital. All commercial vehicles first registered on or after 1 May 2006 must be fitted with digital tachographs. Otherwise you can use an analogue tachograph.