This analysis was conducted using the Public Transport Accessibility (PTA) tool, developed at the CeTLeR Data Lab (Dalarna University). The tool is open access and can be used to measure public transport accessibility for any location in Sweden.
🔗 Access the tool: http://pta.cetler.se/
Study objective:
Measure public transport accessibility to a single point of interest (POI) – Södertälje Hospital.
Data source:
Population grid cells for Södertälje Municipality, provided by Statistics Sweden (SCB) . The analysis measured the proportion of grid cells from which the hospital can be reached within the time window 07:00–08:00.
Analysis parameters:
| Parameter | Value |
|---|---|
| Arrival time window | 07:00 – 08:00 |
| Max walking distance (grid cell → bus stop) | 1000 m |
| Walking speed (grid cell → bus stop) | 7 km/h |
| Max walking distance (bus stop → hospital) | 450 m |
| Walking speed (bus stop → hospital) | 7 km/h |
| Max connection waiting time | 10 minutes |
| Walking distance threshold (grid cell to hospital, without PT) | ≤ 1000 m |
Grid cells located within 1000 meters of the hospital are considered accessible by foot without using public transport.
Results (based on 1000 m² grid cells):
| Accessibility category | Percentage of grid cells |
|---|---|
| Accessible by direct public transport trip | 13.6% |
| Accessible using two connections | 12.6% |
| Within walking distance (≤1000 m) | 0.4% |
| Unable to reach hospital within the given time window (using buses with ≤1 connection) | 73.4% |
Note: The analysis used a 1000 m² grid cell resolution. Higher resolution data can be ordered directly from SCB.se.
