Marker Posts on the A1M
Dataset summary for A1M including area, region, and suffix letter breakdowns.
Use the map to explore the live dataset
Filter by road, region and area — then drill into the exact marker post you need.
Total marker posts (A1M)
4262
Breakdowns included
Area (AREA1–AREA12)
Region (NE/NW/SW…)
Suffix letter (A/J/M/K…)
Area breakdown
Includes numeric range| Area | Count | % | Number range |
|---|---|---|---|
| AREA14 | 1482 | 34.77% | 0/0B – 120/4A |
| RMS33 | 929 | 21.8% | 0/1J – 95/3A |
| AREA12 | 475 | 11.15% | 0/0A – 24/5B |
| AREA8 | 452 | 10.61% | 39/5B – 62/0A |
| AREA29 | 407 | 9.55% | 5/5B – 25/9B |
| AREA5 | 338 | 7.93% | 22/6B – 39/5A |
| CONNECT27 | 173 | 4.06% | 52/0A – 59/7A |
| A1D2B | 6 | 0.14% | 95/2A – 95/5B |
Region breakdown
NE / NW / SW…| Region | Count | % |
|---|---|---|
| NE | 3065 | 71.91% |
| HE | 1197 | 28.09% |
Regions help you understand coverage and where the dataset is densest.
Suffix letter breakdown
A / J / M / K…| Suffix | Count | % |
|---|---|---|
| B | 2110 | 49.51% |
| A | 2101 | 49.3% |
| J | 28 | 0.66% |
| M | 20 | 0.47% |
| E | 2 | 0.05% |
| K | 1 | 0.02% |
Suffix letters are pulled from the end of the marker post number (e.g. 0/1J → J).
Example marker posts
Sample recordsA small sample of marker posts for the A1M dataset:
HE · AREA29 · P10/0A
HE · AREA29 · P10/0B
HE · AREA29 · P10/1A
HE · AREA29 · P10/1B
HE · AREA29 · P10/2A
HE · AREA29 · P10/2B
HE · AREA29 · P10/3A
HE · AREA29 · P10/3B
HE · AREA29 · P10/4A
HE · AREA29 · P10/4B
HE · AREA29 · P10/5A
HE · AREA29 · P10/5B
HE · AREA29 · P10/6A
HE · AREA29 · P10/6B
HE · AREA29 · P10/7A
HE · AREA29 · P10/7B
HE · AREA29 · P10/8A
HE · AREA29 · P10/8B
HE · AREA29 · P10/9A
HE · AREA29 · P10/9B
HE · AREA29 · P11/0A
HE · AREA29 · P11/0B
HE · AREA29 · P11/1A
HE · AREA29 · P11/1B
HE · AREA29 · P11/2A
HE · AREA29 · P11/2B
HE · AREA29 · P11/3A
HE · AREA29 · P11/3B
HE · AREA29 · P11/4A
HE · AREA29 · P11/4B