Transport
Publishers
Transport for London (TfL)
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Smallest Geography
100m Grid Squares
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Public Transport Accessibility Levels
Transport for London (TfL)Transport for London's (TFL) Public Transport Accessibility Levels (PTALs) PTALS are a detailed and accurate measure of the accessibility of a point to the public transport network, taking into account walk access time and service availability. The method is essentially a way of measuring the density of the public transport network at any location within Greater London. Each area is graded between 0 and 6b, where a score of 0 is very ...