OpenDRIVE (experimental)

duckosm opendrive monaco.duckdb                               # -> monaco.xodr: 2,765 roads
duckosm gmns monaco.duckdb                                    # for junctions: a GMNS db first
duckosm opendrive monaco_gmns.duckdb --junctions                  # -> monaco_gmns.xodr: + 1,744 connecting roads, 482 junctions

An ASAM OpenDRIVE 1.7 .xodr, for driving simulators (CARLA, esmini) and microsimulators (PTV Vissim, Aimsun). Each directed edge becomes one road (road id = edge_id): a centre line in metres (the UTM zone of the data, or --crs) and its driving lanes, each 3.25 m wide (OSM's width:lanes isn't used yet). With elevation, roads get an elevation profile (not yet with --junctions).

Without --junctions, roads are not linked to each other at all: good to look at, not to drive. With --junctions (reading a GMNS database), each legal turn at an intersection becomes a connecting road along a smooth curve, grouped into junctions, so vehicles can drive through; where a road simply continues, the two roads link directly.

Limits: checked for structure only, not against the ASAM schema, and not yet loaded in CARLA or esmini. A connecting road has one lane, linked to the rightmost lane of the roads it joins. It starts and ends near the road ends, usually about 2 m off but sometimes tens of metres (Monaco: 220 of 1,744 more than 5 m), which a strict simulator may report. No road type or speed limit, road markings, signals or banking.

from duckosm import to_opendrive
to_opendrive("monaco.duckdb", "monaco.xodr")                          # -> {"roads", "crs"}
to_opendrive("monaco_gmns.duckdb", "monaco.xodr", junctions=True)