milleleaf/hk-roads

Hong Kong road network

Hong Kong's road network from the Transport Department's Intelligent Road Network (2nd generation): every layer and every field of its file geodatabase; its Traffic Aids Drawings (2nd generation: traffic signs, traffic lights, road markings, yellow boxes, crossings, railings, tactile paving, direction and pedestrian signs), every layer and every field; and the Lands Department's Road Centreline (1:1000 topography), for alignment with LandsD's other 1:1000 data. Rebuilt weekly by milleleaf/hk-roads.

One Parquet file per layer (GeoParquet, geometry as WKB in EPSG:4326, every attribute as text exactly as published):

File	What
centerline.parquet	road centrelines with street names (EN/TC), ELEVATION (level: 0 at grade, 1 and 2 elevated), TRAVEL_DIRECTION, route numbers
speed_limit.parquet	speed limit sections
bus_only_lane.parquet, pedestrian_zone.parquet	bus-only lanes and pedestrian zones, with their hours
nsr.parquet	no-stopping restrictions, by vehicle type and time
turn.parquet	restricted turn movements
intersection.parquet, roundabout.parquet	junctions and roundabouts
traffic_features.parquet	zebra crossings, yellow boxes, toll plazas, cul-de-sacs
prohibition.parquet, vehicle_restriction.parquet, permit.parquet	prohibition signs, vehicle restrictions (weight, height, width, length), permit signs
run_in_out.parquet	run-ins and run-outs of off-street car parks
onstreetpark.parquet	on-street parking spaces (id only)
gisp_on_street_parking.parquet	on-street parking details: meter, capacity, vehicle type, operating hours (placed at its own coordinates)
tun_bridge_toll.parquet, tun_bridge_tv_toll.parquet	tunnel and bridge tolls, fixed and time-varying (tables, no geometry)
landsd_road_centreline_hk1980.parquet	Lands Department Road Centreline: street centre lines from the 1:1000 topographic map, with street name (EN/TC), code and type. Geometry in HK1980 Grid (EPSG:2326), the coordinates as the CSDI service returns them (on a 1/16 m grid), for aligning with iB1000/iRG1000 and other LandsD 1:1000 data
landsd_road_centreline.parquet	the same lines in EPSG:4326
traffic-aids/<layer>.parquet	Traffic Aids Drawings: one file per layer of dTAD_IRNP.gdb, named as the layer in lower case (below)

Traffic Aids Drawings layers (TD's drawing of every traffic aid; most carry ELEVATION (level), COMPLETION_DATE, GAZETTE_DATE, LAST_UPD_DATE; sign layers carry SIGNID/POLEID and GG_NAME):

Layer (dtad_...)	What
traffic_light_pt, traffic_light_line, traffic_light_filled	traffic signals: position and angle, and their drawn symbol
crossing_line, ped_refuge_line	crossings (LINETYPE), pedestrian refuges with design and measured size
yl_box_poly, yl_box_line	yellow boxes (YELLOWBOX_TYPE, angles) and their hatching
rd_mark_line, rd_mark_line_c	road markings (COLOR, LINETYPE) and their symbolised representation (pattern, width, offset)
rd_mark_anno	road marking text (annotation: TextString and its placement)
rd_mark_sym_pt, rd_mark_sym_line	road marking symbols (REFNAME, angle, size)
railing_line, rd_al_line, drop_kerb_line, run_in_out_line	railings, special road alignment, dropped kerbs, run-ins/outs
tw_strip_line, tg_path_line, ty_bar_line	tactile warning strips, tactile guide paths, transverse yellow bars
ts_pole_pt, ts_pole_line, ts_plate_line, ts_abv_pt, ts_abv_line, ts_abv_anno, ts_misc_line, ts_filled	traffic signs: poles, plates (drawn), abbreviations and their text
ds_*, ps_*	direction signs and pedestrian (and tourist) signs: poles, plates, text (ps_anno), fills
gipole_pt, cyc_pt, misc_pt	GI poles, cycling signs, other signs
rst_zone_line, lv21_line ... lv38_line, lv22_filled	restriction zones (TIME_ZONE) and the drawing levels 21-38
unknown_line	lines TD has not classified

Layer names are the geodatabase's (TD's data spec and its GML/KML copies call the annotation layers *_ANNO_PT). dtad_lv24_line and dtad_ps_filled are not in the geodatabase: they come from TD's CityGML copies of the same dataset (DTAD_LV24_LINE.gml, DTAD_PS_FILLED.gml). Every feature is kept, including the few without geometry (geometry null; index.json counts them under aids.no_geometry). The data revision cut-off date (TD's DATA_LAST_UPDATED_DATE.csv) is in index.json (aids.revised).

Curved geometries in the source (arcs) are turned into lines. Vector tiles of the geometry layers for web maps (PMTiles, z8-16, one tile layer per Parquet file name; the traffic aids in traffic-aids.pmtiles, z16-18 only (street detail: the densest z16-17 tiles are thinned to fit, z18 holds every feature; zoom past 18 to see them larger); the LandsD centreline in its own landsd-centreline.pmtiles, z12-16) are in the bucket milleleaf/hk-roads.

import duckdb
duckdb.sql("""SELECT SPEED_LIMIT, count(*) FROM 'hf://datasets/milleleaf/hk-roads/speed_limit.parquet' GROUP BY 1 ORDER BY 2 DESC""")

A copy is mirrored to Kaggle after every bake.

Source and terms

Data from the Government of the Hong Kong SAR, Transport Department, via DATA.GOV.HK (Road Network, Traffic Aids Drawings), used under the DATA.GOV.HK Terms and Conditions. The Government owns the intellectual property rights in the data. This dataset is derived from it, provided as is with no warranty, and not endorsed by the Government.

The Road Centreline files are from the Lands Department via the CSDI Portal (dataset landsd_rcd_1637310758814_80061), used under the CSDI terms and conditions, and kept in their own files.