CNR Changchun QKZ6

The CNR Changchun QKZ6 is a five-section, 100% low floor tram/light rail vehicle developed by the then CNR Changchun. The QKZ6 was the first fully low tram developed in China, meeting targets set in the (2006) 11th Five Year Plan. Design of the vehicle was completed in 2007, the vehicle manufacturing completed in 2009, testing started in 2010 and it formally entered service on 19 October 2012. Achieving a fully low floor was a significant technological breakthrough, and it was developed entirely independently of foreign technology. Aside from the bogies, the design team of the QKZ6 also achieved firsts (for China) in traction converters, auxiliary power systems, traction motors, aluminium body, modular articulation node and a digital networking system for the vehicle.

Only one vehicle of this type was produced, #3041. It initially operated on Changchun Rail Transit Line 3 during the testing phase with a white livery, then was repainted to blue when it was formally launched on Line 4. It would not see much service, due to its significant differences and lower capacity to other light rail vehicles used by Changchun Rail Transit. It was effectively retied by the late 2010s and has been in storage since.

Formation/编组：Mc+F+Tp+F+Mc
Length/全长：30.1 m
Width/宽度：2650 mm
Height/高度：3500 mm (excluding pantograph 不包括受电弓)
Design speed/设计速度：70 km/h
Axle load/轴重：10.5 t (M)，11.5 t (Tp)

QKZ6为北车长春轨道客车制造的五模块100%低地板有轨电车，是国内的首列全低地板有轨电车。研发过程从2006年开始，中国科技部将100%低地板轻轨车辆列为国家“十一五”科技支撑项目。此后，负责研发的中国北车集团长春轨道客车股份有限公司在2009年完成了整车制造，于2010年开始空载试验；长客在掌握70%低地板轻轨车研制技术的基础上，攻克了独立轮转向架、轻量化车体、牵引传动及其控制系统等难题，实现了100%低地板车的自主研制，并达到了国际先进水平。试验完成后此车前往长春轨道客车进行翻新，2012年10月19日正式在四号线开始运营。后来由于唯一的一辆车与其他4号线列车区别较大而停止上线。

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