The railway station platform tractor is explicitly named in this heading because of its specific operational environment — railway station platforms — and its design characteristics suited to that confined, pedestrian-heavy setting. Airport ground-support tractors are generally classified under different headings based on their own design specifications and applicable notes.

Yes. Once a works truck is fitted with lifting or handling equipment, it would no longer qualify under 74415 and should be reclassified under the appropriate heading for trucks with lifting equipment. Modifications made before importation must be reflected in the entry classification; post-importation modifications may trigger reclassification obligations depending on the circumstances.