Abstract
fuel- tost- modification- efficiency- f orecast- policy-vehicle ownership-This article summarises results Erom five different schoolsof research into the effects of chanyinb eetrol ereces. Itdemonstrates that there are substantial conllicts ofevidente, and argues that there is inf ormation in theseconflicts which may etself provide researchers with abasis for their resolution. In suggesting a partialresolution, special emphasis is Biven to questions ofshort- and longer-term response by motorists and,gpneral,ly,to tho dynawioa ol thelr adaptatiana to eb4jigo.