The Bangalore Metropolitan Transport Corporation on Saturday began the trial run of Corona Skypak City Bus, a semi-low floor air-conditioned bus, said to be the country's first.

BMTC Managing Director Syed Zameer Pasha launched the trial run at the Shanthinagar Bus Terminal here.

A press release from the BMTC said the bus and coach industry were in a transition phase, from truck chassis to monocoque space-frame platform. Monocoque structure involves integration of the body and the chassis, and is now already in use in many car models.

While Corona Bus Manufacturers Pvt. Ltd., Pune, has provided the Skypak fly-by-wire platform, the coach is integrated by Bangalore-based KMS Coach Builders Pvt. Ltd.

The 12-metre-long and 2.5-metre-wide bus is powered by a 160 HP Cummins ISB electronic engine located at the rear.

The auto transmission technology ensures jerk-free movement while the engine meets Bharat Stage IV emission standards.