|Length:||9.4 miles (15.1 km)|
|Meets:||A39, A30, A3075, B3285|
|Route outline (key)|
The B3284 connects Truro to Cornwall's north coast.
The road begins at a roundabout on the A39 Truro city centre bypass. It passes a couple of traffic signals and the Highcross multi-story car park, then, slightly to the east of Truro Cathedral and the main shopping streets, it climbs round a bend and reaches a mini roundabout. It passes under a railway bridge and continues to climb passing the City Inn and narrowing. Truro is Cornwall's only city, but it's still not a large area and the road quickly takes on a suburban feel.
The climb continues past a disused garage and the city is then left behind completely and a NSL sign appears. It's a pastoral scene after that, as the route makes the transition from south to north coasts. The rural traverse is interrupted at Shortlanesend, a village which sounds like someone forgot the spaces on the sign. It's a 30mph limit through the village. After that is a good straight section where rapid progress should be possible.
The road reaches the A30 in the single carriageway section between Carland Cross and Chiverton Cross. Turning left, a short multiplex is necessary before turning right to continue. In this junction area a D1 arrangement has been made with additional turning lanes and a gap in the divide. This is to improve safety it would seem. A further straight section is interrupted with a double bend and then a staggered junction (left and right again) with the A3075.
Across the junction is more of the same: a fairly straight B road that crosses the countryside. It drops down a hill into the large seaside village of Perranporth. The last couple of hundred yards are humped and then the road turns into the B3285 when that joins from the left at a TOTSO.