Definitions of accessibility include three key elements:
· The category of people or freight under consideration: each section of the population has specific needs and desires to be involved in defined activities.
· The activity supply point: opportunities are defined in terms of the land use supply which would allow any individual to satisfy their desire to participate in the activity under consideration.
· The availability of transportation and connections: this defines how an individual could travel to reach the relevant facility or make contact through electronic networks. In assessing the transport options it needs to be recognised that all stages of each possible journey by each available mode must be taken into account.