Your answer to Question 2019/8978 described the ways of measuring transport connectivity using the TfL WebCAT PTAL and TIM but the answer did not clarify how PTAL and TIM could be used to implement Policy D6 or how these parameters could be used to interpret the appropriate densities of a proposed development.
How should the WebCAT PTAL and TIM parameters be used to determine the acceptability or otherwise of an individual development proposal without some form of detailed guidance or methodology once the Density Matrix has been removed?
These tools are not intended to determine the acceptability of individual development proposals. The tools are a resource that provide information about certain characteristics of a site. This informs the analysis of site opportunities and constraints which, ultimately, is used to determine the acceptability of an individual development proposal. However, in all cases, this determination requires a synthesised understanding of a range of relevant contextual information.