The information of the ST4 tram built by Shenyang Passenger Vehicle Factory for Pyongyang

(Top to down, then second column)
Dimensions: length 18.1m, width 2.5m, height 3.1m, ground clearance 0.9m, total door step height 0.4m, door width (1st, 4th 1.1m ; 2nd, 3rd 1.3m), height of coupler to ground 0.525m

weight 22500 kg+- 5%
load (seated 56, standing 125, total 181)
passenger loading 1086 kg (seems very low)
maximum speed 60 km/h
starting acceleration 0.9 ms^-2
standard braking deceleration 1.2ms^-2
emergency braking deceleration 2.3ms^-2
track gauge 1435mm
minimum curve radius: 50 meter in service, 30 meter in depot
standard height for overhead wire 5500mm
maximum height for overhead wire 5960mm
minimum height for overhead wire 4100mm
bogie axle gap: 1900mm
wheel radius: 700mm
deceleration speed ratio (?) 7.57
motor output 4x45kw
rpm 1450rpm
amp 168A
volt 600V/2

From [[City Transport]] April 1997, 'Reflections on the construction of type ST4 tram'