[2][3] A 41.4 kilometres (25.7 mi) long segment of the railway line had been laid a year earlier from Delhi to Garhi Harsaru that catered to existing flourishing salt production works (from underground brine) at Farrukhnagar, 13.8 kilometres (8.6 mi) to its west.

Another 216 kilometres (134 mi) long line to Phulera via Narnaul, Neem-Ka-Thana and Ringas was laid in 1905 over the time.

All metre-gauge trains starting from (and terminating at) Delhi railway junction (station code DLI) to Punjab, Rajputana, Saurashtra, Kutch and north Gujarat regions passed through Rewari station.

The recently commissioned 72.9 kilometres (45.3 mi) long Rewari–Rohtak track is in Delhi Division of Northern Railway.

[6] This allowed metre-gauge trains from north Rajasthan to continue up to Delhi railway junction on the remaining track while broad-gauge trains ran from Delhi railway junction to Rewari on the other track.

The Rewari–Jaipur–Ajmer track was converted to broad gauge in 1994 and broad-gauge trains started running from Ajmer to Delhi via Rewari.

As a result of this, all metre-gauge trains to Rewari and beyond terminated at and started from Sarai Rohilla which became a railway terminus.

By September 2004, the second metre-gauge track from Sarai Rohilla to Rewari was also converted to broad gauge and all metre-gauge trains stopped operating between Rewari and Sarai Rohilla (though the converted track was "officially" dedicated to the nation by politicians only in October 2006).

Rewari was the world's oldest and largest commercial metre-gauge railway junction until 2010 when this fact became a part of history.

The 361 kilometres (224 mi) long Rewari–Ajmer railway line via Bandikui and Jaipur has double track since 2008.

[13] The alignment of a new railway line of Rapid Regional Transit System (RRTS) from existing Nizamuddin station in New Delhi to Gurgaon–Manesar–Dharuhera–Rewari–Bawal–Shahjanpur–Alwar has been finalised.

[18] The 1,521 kilometres (945 mi) long Western Dedicated Freight Corridor from Kandla port and the JNPT container seaport at New Bombay to Dadri near Delhi passes through Rewari station.

Rewari is a major transit station for freight traffic from Bombay, Kandla and other ports in western India towards Delhi and northern states/union territories of Haryana, Punjab, Himachal Pradesh and Jammu and Kashmir.

In India freight (goods) trains can carry standard containers double-stacked on flat-bed wagons with normal axle load of about 22 tonnes and do not require special low-bed wagons unlike in other countries that have (relatively narrow) 1,435 mm (4 ft 8+1⁄2 in) standard gauge.

[19] Some private logistics operators have built container storage yards north of Rewari near Garhi Harsaru (south of Gurgaon) for this purpose.

Built in 1893, it was the only loco shed in North India for a long time and a part of the track connecting Delhi with Peshawar.

[22] The shed was refurbished as a heritage tourism destination, its heritage edifice was restored and a museum was added by the Indian Railways exhibiting Victorian-era artefacts used on the Indian rail network, along with the old signalling system, gramophones and seats.

Fairy Queen is the oldest working engine in the world and one of national treasure (cultural artifacts) of India.

Now it is used to haul a train used for tourism purposes that departs from the Delhi Cantonment railway station and reaches its destination at Alwar in Rajasthan via Rewari.