This PhD aims at analysing the consequences of a reduction of travel time for freight transportation. We introduce two distinctions to analyse this question. First, we distinguish specific and generic goods. Each of this goods category features a distinctive relationship with travel time. Second, we distinguish travel operations and non-travel operations (warehousing, loading, unloading, etc.). It becomes then possible to analyse the consequences of a travel time modification for a simplified economy consisting of hauliers, producers and consumers. We complement this theorical analysis with two empirical applications : first, an hedonic pricing approach, second a random parameters logit. We also investigate how our analysis leads to reconsidering the value of time for freight transportation used un Cost Benefit Analysis.
