lanestyle

Lane-level road maps from Python.
Every lane at its real width, painted lane lines, and a click that shows where a lane leads. One offline HTML file.

Documentation · Live map · Get started · Gallery · Python API

Quick start

pip install lanestyle

import geopandas as gpd, pandas as pd
import lanestyle as ls

lanes = gpd.read_parquet("docs/data/monaco_lanes.parquet")   # Monaco ships with the repo
turns = pd.read_parquet("docs/data/monaco_turns.parquet")
ls.render_lanes(lanes, turns=turns).save("monaco.html")      # one file, opens offline

Your own area, from OpenStreetMap with duckOSM:

duckosm build --pbf monaco-latest.osm.pbf -o monaco.duckdb -m driving
duckosm gmns monaco.duckdb -m driving -o monaco_gmns.duckdb

lanes, turns = ls.from_gmns("monaco_gmns.duckdb")
ls.render_lanes(lanes, turns=turns).save("monaco.html")

What you get

• Lanes, not roads. Each lane is its own line, exactly its width in metres from zoom 16 on, so neighbours sit side by side with no gap and no overlap.
• Painted lane lines. Dashed dividers, a solid centre line, grey edges: drawn to scale and cut at junctions.
• Turns you can see. Click a lane: it turns red, the lanes it leads into green, U-turns purple. Every lane carries its turn label.
• Everything roadstyle has. Bridges over, tunnels under, base maps, the filter box, popups, arrows and the rs* JavaScript API, from roadstyle. lanestyle is to lanes what mapstyle is to the full base map.

Gallery

Lane lines	A roundabout	A tunnel
Bus lanes	Click a lane	Zoomed out

What goes in

A GeoDataFrame with one row per lane. lane_id, geometry and highway are required; the rest switches features on: width_m, use (bus, bike), bridge / tunnel / layer, name, link_id + lane_num for the lane lines. An optional turns table (from_lane, to_lane, type) gives the clicks and labels. from_gmns builds both from a duckOSM GMNS database.

Column by column: The lane table · settings: Settings · the whole chain from a .osm.pbf: From OSM to lanes.

For AI agents

• Using lanestyle: the agent skill skills/lanestyle/SKILL.md has the install, the lane table, the one call, the JavaScript API and the traps in one page. In Claude Code: /plugin marketplace add Khoshkhah/lanestyle, then /plugin install lanestyle@lanestyle.
• The docs as text: llms.txt and llms-full.txt (every page, one file).
• Changing lanestyle: AGENTS.md has the layout, the commands and the project's rules.

More: AI agents.

License

MIT