a) You are confusing a congestion charge zone (CCZ) with an emissions charge zone (ULEZ) which specifically targets vehicles that do not comply with the latest emissions standards. These are two separate schemes, with different objectives. It is the later that was linked with Labour's by-election failures, in the very outer boroughs that have fairly poor public transport.
b) The INRIX scorecard is citywide. Assuming that they went with the conventional definition of "London", ie. whatever lies inside M25, this is an area of 1579 km2. The Congestion charge zone has an area of 21 km2, which is about 1.3% of the total.
b) The INRIX scorecard is citywide. Assuming that they went with the conventional definition of "London", ie. whatever lies inside M25, this is an area of 1579 km2. The Congestion charge zone has an area of 21 km2, which is about 1.3% of the total.