European route E12 in the context of "Highway"

In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, using a system of interconnecting roadways to permit traffic on at least one of the routes to pass through the junction without interruption from crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway (freeway) or a limited-access highway (expressway), though they are sometimes used at junctions between surface streets.

The Tampere Ring Road (Finnish: Tampereen kehätie) or former Finnish National Road 60 (Finnish: Kantatie 60) is a ring road in the Tampere metropolitan area, Finland. It runs (from west to east) from Ylöjärvi to Tampere, passing through Nokia and Pirkkala. Its western part is part of Highway 3 (between Helsinki and Vaasa), while its eastern part is part of Highway 9 (between Turku and Tohmajärvi).

The ring road has been a motorway along its entire length since 2009. The main section of the ring road is used by more than 50,000 vehicles per day. According to the ELY Centre of Pirkanmaa, the western part of the ring road is the busiest road in Finland, excluding the motorway and ring road connections in the Helsinki metropolitan area.

Finnish national road 3 (Finnish: Valtatie 3 or Kolmostie; Swedish: Riksväg 3) is a highway in Finland between Helsinki and Vaasa via Hämeenlinna and Tampere. The road is 424 kilometres (263 mi) long and it is part of the European route E12. 180 kilometres (110 mi) of the highway is motorway, connecting Helsinki to Tampere. North of Tampere, the road is mostly two-lane road, with a share of 2+1 road. The busiest point on Highway 3 is in Helsinki, north of the Ring I junction, where the average traffic volume is about 90,000 vehicles per day.

Back in the late 1950s before the current freeway, the Finnish regional road 132 (Mt 132) was the former main road to Hämeenlinna and Tampere via Loppi and Janakkala.