| Modèle | Vitesse maximale en avant | Vitesse maximale vers l'arrière |
|---|---|---|
| D575A-2 | 12 km/h - 7.5 mile / h | 13.8 km/h - 8.6 mile / h |
| D475A-5 Niveau 2 | 11.2 km/h - 7 mile / h | 14 km/h - 8.7 mile / h |
| D475A-3 | 11.6 km/h - 7.2 mile / h | 14.4 km/h - 8.9 mile / h |
| D375A-5 | 11.8 km/h - 7.3 mile / h | 15.8 km/h - 9.8 mile / h |
| D375A-3 | 11.8 km/h - 7.3 mile / h | 15.8 km/h - 9.8 mile / h |
| D355A-3 | 12.7 km/h - 7.9 mile / h | 12.6 km/h - 7.8 mile / h |
| D355A-1 | 12.7 km/h - 7.9 mile / h | 12.6 km/h - 7.8 mile / h |