While I don't doubt there are shortcomings in the US's road safety regulatory regime, That's probably not a fair comparison.
I strongly suspect that on both a trip-miles and passenger-miles basis, the US far outstrips any european country.
*edit
If you sort that table on 'road fatalities per billion vehicle KM' you'll see the US at 7.3, same as Belgium. The UK is doing better at 3.4