TY - RPRT TI - Automated driving system safety measurement part I : operating envelope specification AU - Griffor, Edward AU - Wollman, David AU - Greer, Christopher PY - 2021 PB - National Institute of Standards and Technology (U.S.) CY - Gaithersburg, MD SN - NIST SP 1900-301 DO - 10.6028/NIST.SP.1900-301 ER -