Waymo, which is owned by Google parent company Alphabet, has issued a recall notice for its self-driving cars after two of them hit the same pick-up truck in an accident in December.

The firm currently operates commercial robotaxi services in Phoenix, Arizona, and San Francisco, California, with new services planned in Los Angeles, California, and Austin, Texas.

But two accidents that occurred on the same day last year in Phoenix caused Waymo to issue a recall that could potentially involve 444 autonomous vehicles.

On December 11, a Waymo vehicle made contact with a backwards-facing pickup truck that was being “improperly towed”, according to a blog post from the firm.

Following contact, the tow truck and towed pickup truck did not pull over or stop traveling, and a few minutes later another Waymo vehicle made contact with the same pickup truck while it was being towed in the same manner.

Neither Waymo vehicle was transporting riders at the time, no injuries were incurred and the only damage...