Table 1 Descriptive exposure statistics (non-trip-weighted and trip-weighted) of bike-sharing trips in 2019 in Helsinki
Route | Bike-sharing routes (non-trip-weighted) | Mean exposure change of the optimal route (when available) compared to the shortest route | Mean distance (m) | Mean additional distance (m) | |||
|---|---|---|---|---|---|---|---|
Mean AQI* | Mean noise (dB)** | Mean GVI | Share of routes where exposure-optimal route is available within 15% detour distance | ||||
Shortest | 1.91 | 66.6 | 0.22 | N/A | N/A | 6211 | N/A |
AQI-optimal | 1.89 | 64.1 | 0.22 | 54.3 | − 0.02 (AQI) | 6268 | 57 |
Noise-optimal | 1.88 | 58.2 | 0.24 | 94.9 | − 8.3 (dB) | 6825 | 614 |
GVI-optimal | 1.89 | 63.5 | 0.29 | 84.2 | 0.08 (GVI) | 6547 | 336 |
Bike-sharing routes (trip-weighted) | |||||||
Shortest | 1.91 | 65.5 | 0.17 | N/A | N/A | 2067 | N/A |
AQI-optimal | 1.90 | 64.0 | 0.18 | 26.2 | − 0.01 (AQI) | 2083 | 17 |
Noise-optimal | 1.89 | 59.8 | 0.18 | 78.3 | − 5.4 (dB) | 2224 | 157 |
GVI-optimal | 1.91 | 64.7 | 0.19 | 47.4 | 0.03 (GVI) | 2116 | 50 |