This is a list of essential terms of the mobility. Your contributions help keep the list fresh and up to date: you can propose new words or redefine those already on the list by refining or supplementing their current definitions. Each lexicon entry comes with both a brief definition and a more detailed explanation, accompanied by a bibliography. Some definitions include suggestions for further discussion or research opportunities. Wherever a lexicon entry appears on the site, its brief definition is available as well, and if so required, you can follow a link to see the complete definition.
The value of time in the transport economy corresponds to how willing people are to pay, in order to save time. It offers an explanation of the choices people make between different modes of transport after weighing up the financial versus time costs. It is also used to plan and to financially justify a choice of investments made on the basis of time saved by the new infrastructure.