In 1985, this short section was upgraded to regular gauge tracks.

This second section of the road is currently being upgraded to an expressway.

To improve operations, this section of the line is being upgraded from two to four tracks by about 2016.

In 1990 the section was upgraded and all traffic halted for three months.

When a section of the A1 was upgraded to motorway standard in 1998 it required moving the memorial.

This section of Route 116 was upgraded to a partially access controlled road in 1961.

Although this section will be upgraded before 2030, there are currently no detailed plans for the area yet.

The inner section of the freeway is currently being upgraded.

In the period 2012-2014, the whole section will be upgraded to double track.

Some sections of the A1 have been upgraded to motorway standard.