Toyota Motor Corp. could offer a self-driving system co-developed with Uber Technologies Inc. to its Asian ride-hailing rivals, including Singapore-based GrabTaxi Holdings Pte. Ltd. and India-based ANI Technologies Pvt. Ltd.'s Ola, Japan Times reported, citing sources close to the matter.

The Japanese carmaker could also offer the system to China's Didi Chuxing Technology Co. Ltd. if U.S.-China trade relations improve, according to the report.

In April, Uber's self-driving unit received $1 billion from Toyota, SoftBank Group Corp. and DENSO Corp., a Toyota Motor affiliate. Toyota and Uber also agreed to collaborate on driverless tech in August 2018.

Softbank Group, which formed a joint venture for new mobility services with Toyota in October 2018, holds stake in Grab and Ola.