Tough regulatory scrutiny and delayed commercial adoption of autonomous vehicle technology have delayed deployment of robotaxi services, worrying investors.

Los Angeles will become the second city where the companies will offer the driverless taxi service after Las Vegas.

Motional which uses Hyundai Motor Co's IONIQ5 electric car for the robotaxi service is a joint venture between the South Korean manufacturer and automotive technology company Aptiv.

The autonomous vehicle technology company also has a 10-year agreement with Uber Technologies Inc for supplying driverless vehicles.

Competitor Waymo started its autonomous ride-hailing service in Phoenix, Arizona last week.

(Reporting by Akash Sriram in Bengaluru; Editing by Vinay Dwivedi)