Public transport accessibility levels
The London Plan, published by the Mayor of London in March 2016, suggests that public transport accessibility levels (PTALs) are: ‘…a detailed and accurate measure of the accessibility of an area to the public transport network, taking into account walk access time and service availability.’
It suggests that PTALs reflect:
- Walking time from the area of interest to the public transport access points.
- The reliability of the service modes available.
- The number of services available within the catchment.
- The level of service at the public transport access points - i.e. average waiting time.
PTALs do not consider:
- The speed or utility of accessible services.
- Crowding, including the ability to board services.
- Ease of interchange.
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