The order has an estimated value of €120m if all options are exercised.

All three cities have metre-gauge networks, which are electrified at 600V dc.

The specification calls for 30m-long 60% low-floor vehicles capable of accommodating up to 150 passengers, around 50 of them seated.

The order will be partially funded by the state of Brandenburg, which is making €48m available for investment in barrier-free public transport by 2022.