I vividly remember playing with it when I was about 5, 1980ish.
It was yellow plastic (may have had different colours on it as well)
Battery powered.
Uniquely, and the thing I remember most about it, on one side of the train it had a small lever switch, which turned it on and off. Used to play with it on the 'red' plastic track.
Would dearly love to see it again; it's the lever that I most remember.
Can anyone help me, my searches seem fruitless.
Thankyou