Swedish national database on traffic regulations RDT. As of July 1st 2010 it is mandatory in Sweden that all traffic regulations are published in this database. Before that date publication is voluntary.

Offers three perspectives:
Formal index: all regulations published nationally or by local authorities.
Existing records: what regulations were in place at any given date.
Search: to find specific regulations.

Data source: https://rdt.vv.se/rdt/default.aspx
Formats: XML and PDF

Found via http://www.opengov.se/data/57/ by Peter Krantz