Utah Highway Patrol officials said troopers made more than 4,000 traffic stops over the holiday weekend.
Authorities said nine people were killed in two of the 126 crashes investigated since Friday.
Troopers arrested 60 people for driving under the influence in a total of 4,103 traffic stops.
UHP July 4 Holiday Stats:
Traffic stops: 4,103
DUI arrests: 60
Other alcohol arrests: 40
Speeding tickets: 2,670
Seat belt citations: 268
Crashes investigated: 126
Fatal accidents: 2 crashes killing 9 people