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    Train track compatibility

    There’s some compatibility between all the LEGO® train tracks. Over the years, we've never changed the width of the train tracks.

    The train cars from all earlier models will run on the new track and connect to the new trains. Also, the new Power Functions train will be able to run on the old tracks, but the 9V and 12V motors won't be able to run on the rails that don't have metal on them as there's no electricity being conducted.​​​​​​​