The line is electrified at 15 kV  16.7 Hz AC and equipped with centralized traffic control and GSM-R.

[11] Previously there was a branch just south of the station which ran through a 334-meter (1,096 ft) long tunnel before reaching the port.

The line continues past Sandnes Station (15.36 m or 50.4 ft),[11] which is the end of the double track.

The line continues through six tunnels, the longest being 596 meters (1,955 ft), before passing the closed Maurholen Station.

In the mid-19th century, the roads were improved, and ideas were launched to start a traction engine service along the coast.

At an 1866 meeting at the sheriff's office in, Forest Manager Andreas Tanberg Gløersen launched the first idea of building a railway to connect Stavanger and Egersund.

[23] The meeting concluded that a railway should be built, and the responsibility for the preparatory work was given to County Governor Vilhelm Ludvig Herman von Munthe af Morgenstierne.

But during planning, national authorities stated that the line would be part of a trans-national railway that would connect Rogaland to Eastern Norway.

Parliament had in its proposal for the line stipulated that the railway should have good port access in Sandnes.

However, it gave only a single station, and was eventually chosen, after the municipal council initially had supported the Blue Line.

With the opening of the Sørlandet Line, a new station was built 1-kilometer (0.62 mi) north of the city center.

[40] After these changes, including the move of the station in Egersund, the Jæren Line was reduced to a length of 73.1 kilometers (45.4 mi).

[7] In 1966, 18 stations were closed, consisting of Maurholen, Vatnanot, Stokkaland, Hogstad, Stavnheim, Odland, Dysjaland, Kvia, Tårland,[20] Gjerdo, Vardheia, Laland, Engjelsvåg, Orstad, Skjæveland, Lura, Luravika and Vaulen.

[55] The increase in service involved 15 departures per direction per day, and the travel time from Stavanger to Egersund was reduced from 80 to 55 minutes.

[56] The commuter service was a success, with NSB experiencing a 112 percent increase in ridership the first year.

[61] In 1997, NSB announced that they would order 36 new electric multiple units, which would among other things replace the aging trains on the Jæren Line.

[64] On 2 January 2007, the Scanet train radio system was replaced with GSM-R.[9] To further increase capacity and regularity, the Norwegian National Rail Administration decided to rebuild the section from Stavanger to Sandnes to double track.

[65] The primary goal of the project was to increase capacity and build stations in areas with transit-oriented development.

The route is built to allow the light rail service to enter and leave the Jæren Line at Lura, Gausel, Hinna and Stavager.

Lurahammaren Tunnel was widened to allow double track, a new bridge was built over the intersection og Langgaten–Strandgaten, a new bridge was built over County Road 44 at Lura, the technical facilities at Sandnes Station were upgraded, and the tracks to the port in Sandnes were removed.

[4] From April to November 2009, the section from Ganddal to Stavanger was closed while the last part of the upgrade was completed.

[71] The Jæren Commuter Rail is a local services operated by Go-Ahead Norge between Stavanger and Egersund.

[77] Plans have been made which call for either doubling or tripling the frequency on all the services on the existing commuter rail network.

Parts of the Jæren Line is straight enough to permit speeds between 200 and 250 kilometers per hour (120 and 160 mph).

The first 3 kilometers (1.9 mi) of the line remains in use, allowing freight trains access to a cement factory.

The National Rail Administration retains ownership and can in the future renovate the line for operation.

It is possible to continue the trains that currently terminate at Sandnes to Ålgård without new infrastructure investments to the Sørlandet Line.

However, the Ålgård Line would need a full upgrade, including new tracks, electric system and signaling.

Proposed stations include the airport, Solakrossen, Forus West, Statoil's head office and possibly the shopping center Kvadrat.

The light rail would have interchange with the Jæren Line at Stavanger, Paradis, Jåttåvågen, Gausel and Sandnes Sentrum.