https://www.theregister.co.uk/2018/10/31/fcc_5_9_ghz_coexistence/

A mostly-unused slice of radio spectrum set aside for connected cars in 1999 could soon be shared with Wi-Fi, with the Federal Communications Commission seeking comment on the future of the 5.9 GHz band.

On Monday, the FCC presented the results of tests conducted by Cisco, Qualcomm, KEA Tech, Broadcom, and CAV technologies to see how well Wi-Fi devices (in regulatory-speak “unlicensed national infrastructure”, U-NII, devices) can share spectrum with Dedicated Short Range Communications (DSRC) systems for the Intelligent Transportation Service (ITS).