Durmazlar has built two five-section 27.8m-long unidirectional prototypes, one of which is currently undergoing dynamic testing on the tram network in the Turkish city of Bursa. The company says it hopes to complete certification of the vehicle next month.

The prototype Silkworm is equipped with four 100kW traction motors, allowing it to climb an 8.2% gradient when fully-loaded and is capable of operating at up to 50km/h. It can negotiate 18m-radius curves and accommodates up to 282 passengers, 58 of them seated.

Durmazlar plans to offer the Silkworm is a variety of unidirectional and bidirectional configurations.