British Rail Class 171
| British Rail Class 171 "Turbostar" | |
|---|---|
 | |
| In service | 2003 - Present |
| Manufacturer | ADtranz / Bombardier |
| Family name | Turbostar |
| Constructed | 2003-2004 |
| Number built | 16 trainsets |
| Formation | 2/4 cars per trainset |
| Fleet numbers | 171721 - 171730, 171801 - 171806 |
| Operator(s) | Southern |
| Specifications | |
| Maximum speed | 100 mph |
| Prime mover(s) | MTU 6R 183TD |
| Safety system(s) | AWS, TPWS |
The Class 171 "Turbostar" is a type of DMU operated by Southern. The Class 171 is identical to the Class 170, except for the replacement of the BSI coupler with a Dellner coupler. This provision was made in order to allow emergency joining with Class 377 DC third-rail electric units.
