When Ljubljana had about 40,000 inhabitants, the city authorities decided to impose a "mechanised" means of transport and in 1900 Splošna maloželezniška družba (English: General little railway company) was officially established.

The company was in fact very small, because only 13 motorised units with 1 trailer and a car used for salting roads in winter were in stock, 64 people were employed.

In 1929, the Splošna maloželezniška družba changed its name to Električna cestna železnica (English: Electric street railway) and since 1930 the city modernised stock and tracks.

After the Second world war, Ljubljana quickly spread and the tramway could no longer withstand the growing transportation needs in the city.

When cars started to spread among general population, it was an additional reason for different arrangements of public transport that would prejudice less street surface in Ljubljana.

The transition was gradual, during 1958 first trolleybuses and buses started to regularly operate in Ljubljana, trams stopped driving, the Električna cestna železnica was renamed to Ljubljana-Transport.

The 1960s and 1970s brought unimagined development of urban public transport and the company, which was renamed Viator in 1971, gradually expanded its operations throughout Slovenia.

Further mergers and alliances followed between different transport, tourism and hotel organizations throughout Slovenia, and also the Viator found itself on March 25, 1981, in the INTEGRAL SOZD.

In 1989, the LPP has decided to withdraw from the Integral, since there were no more development opportunities for continuing operations of urban public transport to Ljubljana, its people and suburbs and also its visitors.

With the abolition of the conductor position, passenger were allowed to enter only at the first door, where the driver oversaw the payment.