Fiat Chrysler is joining the self-driving alliance led by BMW Group, Intel and its Mobileye subsidiary, becoming the second automaker in the group to opt to partner in developing an autonomous driving platform.

The group plans to put its technology for both fully and partially autonomous driving into production by 2021, matching a general timeframe shared by rival automakers and technology companies who are developing such technology alone.

The partners said Fiat Chrysler (FCA), which already has a non-exclusive alliance with Alphabet's self-driving unit Waymo, would bring engineering and other technical resources and expertise to the deal, as well as experience in North America, the automaker's most profitable market.

Auto suppliers Delphi Automotive and Continental AG are also part of the BMW-Intel alliance.

The group said it was still on track to put 40 self-driving test vehicles on the road by the end of 2017, and would learn from the 100 test vehicles to be deployed by Mobileye in the United States beginning later this year.