E4 is the main core network road in Sweden in south-north direction, which runs all the way from Helsingborg in the south to Haparanda in the north. From Helsingborg up to Gävle there is an uninterrupted high-speed motorway with minimum four lanes. North of Gävle with few exceptions up to Umeå the most common standard is meeting free 2+1 lane highway. There are some stretches that needs upgrading. For example, in Örnsköldsvik the road needs to be located outside the city centre and between Umeå and Skellefteå there are about 70 km traditional road in need separate lanes. From Skellefteå up to Haparanda the standard is with few exceptions either 4-lane motorways or meeting free 2+1 way.
The road E10 between Luleå and Kiruna and up to Narvik is in general traditional 2-lane way, in need of upgrading to 2+1 highway, which is planned for some sections in the new national transport plan 2018-29.