This conclusion does not seem to be borne out by the statistics quoted at the very end of the article: of the 171 accidents recorded on the 104 miles between Perth and Inverness over 36 months, 132 (or 77 per cent) of all accident occurred on the 80 miles (or 77 per cent) of single carriageway, while 39 accidents (or 23 per cent) occurred on the 24 miles (or 23 per cent) of dual carriageway.
Harald Tobermann
Pilrig Street
Edinburgh