City of Phoenix takes measures to make Valley intersections safer after startling report The Maricopa Association of Government released its list of the 100 most risky intersections based off data from 2015-2019. Author: Michael Doudna Updated: 10:55 PM MST March 4, 2021 PHOENIX — Every day thousands of Arizonans hit the roads in the Valley, but all too often they don't make it home. Phoenix ranks third among U.S. cities in total fatalities on its streets, behind Los Angeles and Houston. The Maricopa Association of Governments has put out a list of the 100 most dangerous intersections. The list was complied using data between 2015 and 2019, and takes into account the number of crashes and severity.