US updates self-driving car guidelines

ANN ARBOR, Mich. (AP) — The Trump administration is updating safety guidelines for self-driving cars in an attempt to clear barriers for automakers and tech companies who want to get test vehicles on the road.
U.S. Transportation Secretary Elaine Chao announced the new voluntary guidelines Tuesday during a visit to an autonomous vehicle testing facility at the University of Michigan.
The new guidelines update policies issued last fall by the Obama administration, which were also largely vo