Salt Lake City drivers crash more frequently than the national average and are sinking in national rankings, a new report says. Meanwhile, West Valley City drivers are even more likely to crash, but their skills appear to be improving â and their ranking is climbing. Salt Lake City drivers ranked No. 78 best among the nationâs 200 largest cities for safety â down four spots from last year, according to Allstate insuranceâs Americaâs Best Drivers Report.