osm2pgrouting tool makes it easy to import OpenStreetMap data and
use it with pgRouting. It creates topology automatically and creates
tables for feature types and road classes.

Features:
* Uses XML configuration file to select road types and classes to import.
* Creates types and classes tables, which can help to create sophisticated
  cost functions.

WWW: http://pgrouting.org/docs/tools/osm2pgrouting.html