I read several years ago that traffic fatalities were not particularly more significant on holiday weekends than any other days. Safety advocates just had us all thinking they were with their public service advertising campaigns and police check points.
A study by the Insurance Institute for Highway Safety mostly confirms this. For the period 1986 through 2002 there were an average of 117 traffic fatalities a day in the United States. And, while July 4 was the worst day of the year with an average of 161 fatalities, 158 people were killed on any given Saturday.
July 4 is the only date in the year less safe than any given Saturday.
The worst dates:
July 4 — 161
July 3 — 149
December 23 — 145
August 3 — 142
January 1 — 142
Days of the week:
Sunday — 132
Monday — 96
Tuesday — 95
Wednesday — 98
Thursday — 105
Friday — 133
Saturday — 158