Core: Signage: E/A/N-roads, K-signs and speed-indicating road markings

Signage shows you the right direction (Book p.76): on motorways you often find decision signs with arrows above the road; you follow your destination and move onto the indicated lane. These signs often also carry symbols, showing the direction to, for example, an airport, a traffic interchange, a ferry, a restaurant or a car park. The letter before a road number tells you something different from the number after it: an E-road is an international European main route (often, but not necessarily, a motorway); an A-road is a Dutch motorway, often also part of an E-road; an N-road is a Dutch main road that is NOT a motorway (Book p.78). These layers overlap — an A-road is not the opposite of an E-road, often precisely a part of it. Two K-signs are exam requirements: K4 is the high decision sign along a motorway, with a lane panel for the through direction and a turn-off panel for the diverging direction, with interlocal destinations, route numbers and European main routes; K3 is the sign along a motorway to a service area, with the name of the car park and symbols showing the nature of the facilities (Book p.77). For some years now, road marking has also made the road category recognisable by itself. On the side of the carriageway: 100 km/h = solid line, 80 km/h = broken line, 60 km/h = broken line with possibly an advisory lane. But the table is an aid, not a law: if a bare '60 km road' has no maximum-speed sign and no zone sign, you may even drive 80 km/h — the marking points, the sign decides.