Greater Manchester Accessibility Level (GMAL)

The Greater Manchester Accessibility Levels (GMAL) method has been created to provide a way of measuring the density of public transport provision at any location within the Greater Manchester region. It is derived from the Public Transport Accessibility Level (PTAL) approach used by Transport for London. As such, the Greater Manchester Accessibility Index (GMAI) scores generated by the GMAL method can be used as evidence of compliance against the BREEAM and HQM Accessibility Index requirements. Please note that project teams must ensure that they use the version of the GMAL dataset that is current at the time the transport assessment is undertaken. This is available from the website (

02 08 2022 - Updated to clarify that the dataset used must be current at the time of the transport assessment, but this does not need to be updated at post-construction stage