US ride-hailing company Uber Technologies Inc. on Thursday launched its car pool service in South Korea from which it sees a "big opportunity."

The uberSHARE car pool service comes after Uber launched the restaurant delivery app UberEATS last month as it seeks to diversify its business portfolio in Asia's fourth-biggest economy.

The "eco-friendly and affordable" car pool service, initially available in Seoul, will help alleviate traffic congestion during commuting hours, Brooks Entwistle, chief business officer for Uber Asia Pacific, said at a press conference in Seoul, home to one fifth of the country's 52 million population. 

"A big part of air pollution over the skies of this city (Seoul) is driven from and a result of carbon emissions from automobiles. We can take cars off the road by reducing the number of single occupancy vehicles," he said, adding that such a development will help solve air pollution issues.

Prior to the uberSHARE service's official launch, Uber signed a memorandum of understanding with the Korea Green Foundation last month to work on the issue together, the Singapore-based executive said.

"There are three million cars on the roads in Seoul. The number has increased by 10 percent over the past decade. That is an extraordinary number causing congestion and taking longer time to go to work," he said.

The uberSHARE service is initially available for carpool commute trips that start from the affluent Gangnam Ward in southern Seoul. The service is available Monday through Friday (excluding weekends and public holiday) from 6 a.m.-10 a.m. and 5 p.m.-midnight, Uber said.

To use the service, commuters can tap a button for the uberSHARE service on the existing Uber app and get a ride through matching drivers and passengers. Commuters can use the service just as passengers or sign up as an uberSHARE driver partner through Uber's official website.

Partner drivers are allowed to serve fellow commuters only two times a day and the service fares appear to be reasonable.

The fare for the service from Gangnam Station to Gwanghwamun is estimated to be 7,000 won ($7) to 9,000 won, with the fare for the station to Pangyo, just south of Seoul, to be 8,000 won-10,000 won. Cancellation charges are set at 3,000 won per case, Uber said.

Uber has advanced to more than 600 cities in 77 countries with its ride-sharing services. But the uberSHARE service is only available in Seoul for now.

In early 2015, Uber entered the Korean market with its UberX car-sharing service but it was banned in Seoul as it violated local transportation laws by partnering with nonlicensed independent drivers.

While looking for an opportunity to resume the UberX business in Seoul, Uber launched its premium taxi service, UberBLACK, last year mainly to serve customers in the downtown, Itaewon and Gangnam areas.

"We (will) continue our dialogue with the city of Seoul in a constructive manner," the executive said. (Yonhap)