Stats computed: 2026-05-05 10:57

Stops matching

54,882
ATLAS Platforms
48,810
OSM Stops
62,951
OSM Nodes
88.7%
Matched ATLAS (%)
51,623
ATLAS with OSM ≤ 50m
94.3%
Matched ATLAS with OSM ≤ 50m (%)
Matching Stages
Stage Count % of Total Many-to-One Not Closest
Exact (UIC ref) 21,769 35.8% 13,916 4,857
Name matching 457 0.8% 6 166
Distance (total) 26,272 43.2% 2,210 5,884
Stage 0: Trio side matching 2,168 3.6% 2,168 718
Stage 1: Group proximity 23,445 38.5% 38 5,075
Stage 1a: UIC ref 23,108 38.0% 33 4,999
Stage 1b: UIC name 69 0.1% 0 12
Stage 1c: Name 268 0.4% 5 64
Stage 2: Local ref 121 0.2% 4 37
Stage 3a: Single candidate 461 0.8% 0 53
3a pass 1 405 0.7% 0 46
3a pass 2 56 0.1% 0 7
Stage 3b: Ratio test 77 0.1% 0 1
Route matching (total) 0 0.0% 0 0
GTFS 0 0.0% 0 0
Post-processing: Unique by UIC 248 0.4% 0 195
Post-processing: ATLAS Duplicate propagation 308 0.5% 308 117
Post-processing: OSM stop partner propagation 11,809 19.4% 1,202 7,091
Distance Quality
13.5m
Mean Distance
6.16m
Median Distance
46.06m
95th Percentile
Distance by Matching Stage
Stage Count Mean (m) Median (m) P95 (m)
Exact (UIC ref) 21,769 21.51 8.92 80.66
Name matching 457 47.6 13.61 121.63
Distance Stage 0 (trio side) 2,168 8.83 4.46 23.74
Distance Stage 1a (UIC ref) 23,108 7.2 5.17 21.42
Distance Stage 1b (UIC name) 69 8.67 5.57 33.41
Distance Stage 1c (Name) 268 12.66 8.05 42.42
Distance Stage 2 (local ref) 121 15.14 11.6 39.1
Distance Stage 3a pass 1 (single candidate) 405 12.37 8.3 42.76
Distance Stage 3a pass 2 (single candidate) 56 10.14 5.58 44.52
Distance Stage 3b (ratio test) 77 2.94 2.32 7.13
Post: Unique by UIC 248 97.54 78.31 215.56
Post: Duplicate propagation 308 23.46 8.61 100.28
Post: OSM group propagation 11,809 8.72 5.49 24.61
Cross-Predicate Consistency

If we had matched every pair to its nearest OSM node instead:

69.9%
Consistent with Nearest
42,553
Same as Nearest
18,310
Would Differ
Many-to-One Analysis

OSM platform/stop_position groups are counted as one OSM stop in this section.

327
ATLAS platforms matched to multiple OSM stops
Max: 5 OSM stops per ATLAS
7,516
OSM stops matched to multiple ATLAS platforms
Max: 10 ATLAS per OSM stop
Distribution: 1 ATLAS to N OSM stops

Ratio key: 1A:2O = one ATLAS platform matched to two OSM stops.

1A:2O 289 1A:3O 32 1A:4O 5 1A:5O 1
Distribution: N ATLAS to 1 OSM stop

Ratio key: 2A:1O = two ATLAS platforms matched to one OSM stop.

2A:1O 7,062 3A:1O 267 4A:1O 148 5A:1O 22 6A:1O 9 7A:1O 1 8A:1O 6 10A:1O 1

OSM Stops

OSM Stop Inventory
62,951
OSM Nodes
48,810
OSM Stops
1,686
OSM Stations
Non-node OSM Stops (Ways)
370
Total Way Stops
187
Matched
183
Unmatched
50.5%
Match Rate
OSM Groups (Platform / Stop Position Pairs)
13,056
Total Groups
12,894
Both Matched
162
Neither Matched
Groups by Type
Group Type Count
osm_trio 1,085
osm_pair_uic_equal_15m 8,745
osm_pair_uic 2,225
osm_pair_name 657
osm_pair_name_equal_15m 22
osm_pair_tram 309
osm_pair_tram_equal_15m 13

Unmatched

Unmatched Analysis
Unmatched ATLAS (6,200)
No OSM within 50m 3,259
Has nearby OSM 2,941
Unmatched OSM (9,235)
No ATLAS within 50m 3,525
Has nearby ATLAS 5,710
Has Attributes Count
UIC & Local Ref & Routes 0
UIC & Local Ref 317
UIC & Routes 0
Local Ref & Routes 0
UIC only 4,865
Local Ref only 181
Routes only 0
None 3,872

ATLAS

ATLAS Duplicates
Total duplicate SLOIDs 590
Matched duplicates 581
Unmatched duplicates 50

Problems

Problem Detection Statistics
37,569
Clean Entries (No Problems)
49.2% of total 76,298
38,729
Entries with Problems
50.8% of total 76,298
3,404
Multiple Problems Output
Entries with >1 problem types
Problem Type Count
Distance — Too far from OSM node 1,213
Unmatched — Isolated ATLAS / OSM node 4,808
Attributes — Missing or mismatched data 974
Problem Type Count
Distance — Too far from OSM node 4,344
Unmatched — Isolated ATLAS / OSM node 7,518
Attributes — Missing or mismatched data 318
Duplicates — OSM or ATLAS side collisions 306
Problem Type Count
Distance — Too far from OSM node 5,621
Unmatched — Isolated ATLAS / OSM node 3,109
Attributes — Missing or mismatched data 12,550
Duplicates — OSM or ATLAS side collisions 1,434

Routes

Route Coverage
ATLAS GTFS coverage 0 0%
OSM stops with routes coverage 0 0.0%
Route-Route Matching
Metric Count
Route-route links (ATLAS ↔ OSM) 5,814
Linked ATLAS route IDs 1,888
Linked OSM route IDs 5,814
Coverage Count Percent
ATLAS route IDs with link 1,888 / 3,769 50.1%
OSM route IDs with link 5,814 / 7,971 72.9%
ATLAS route directions (total) 7,082 -
OSM route directions (total) 7,971 -
This section reports route-route links from import DB route tables, not stop-level predicate matches.
GTFS stop_id → ATLAS sloid Mapping
50,790
Total GTFS stop_ids
19,911
Matched stop_ids
30,879
Unmatched stop_ids
39.2%
GTFS Coverage
54,882
Total ATLAS sloids
28,795
Touched ATLAS sloids
52.47%
ATLAS Coverage
Matching Paths

GTFS stops are matched to ATLAS sloids in two successive passes. The second path only considers stops not matched by the first.

① Strict matching

Matches on (UIC number, local ref) = (number, designation) in ATLAS.

26,941
Assignments
② Unique-number fallback

For remaining stops: if a UIC number maps to exactly one ATLAS row, use that sloid.

2,277
Assignments
29,218
Total assignments (both paths combined)
Cardinality
GTFS stop_id side
13,018
1 → 1
6,893
1 → many
ATLAS sloid side
28,377
1 → 1
418
many → 1
Unmatched Reasons
Reason Count
No ATLAS candidate for this UIC number 334
Non-unique ATLAS number (strict miss, fallback not applicable) 30,545
Data update running in background
Preparing update... | Phase: initializing
Data update in progress
Core data is being refreshed. Use this time to read the documentation.
Elapsed: -- ETA: -- Phase: idle