TRRL forskning i Northampton, United Kingdom (Tunbridge, 1981) viste imidlertid, at på længere rejser var der en reaktion blandt bilpendlere, som af økonomiske grunde gik over til fabriksbusser.
TRRL research in Northampton, United Kingdom (Tunbridge, 1981) did show however that on longer journeys there was a response among car commuters to switch to works buses for cost reasons.