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Carbon Assessment Playbook

The Carbon Assessment Playbook has been developed by England’s Subnational Transport Bodies to provide an evidence-led, quantifiable approach to carbon reduction in the development of local transport strategies and plans.

The CAP has two key components:

  • Carbon baseline dashboards for each local transport authority, showing how emissions are forecast to change.

  • Policy builder, which enables you to explore the potential carbon reduction impact of different interventions.


    On this page, you can navigate through to both parts of the tool, and gain quick access to their supporting documents and tutorials.



This tool has been developed jointly by Subnational Transport Bodies to support local transport authorities put the DfT's Quantifiable Carbon Guidance into practice.


Baseline Dashboard

If you are accessing the CAP for the first time, you will need to be registered to access the baseline dashboard element of the tool. If you want to request access please email: tf.se@eastsussex.gov.uk

For those of you who are unable to download the supporting documents for the Baseline Dashboard (due to file access restrictions), they are provided below.


Baseline dashboard demo - https://youtu.be/XUvdbcD56s8


Policy Builder

This part of the CAP enables you to explore the potential carbon reduction impact of different interventions.


New to the tool?

Watch tutorials on how to use the tool here:

The below resource from the Department for Transport provides invaluable support on quantifying carbon emissions

Quantifying carbon emissions for local transport planning - GOV.UK

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