Five Conservative-led councils in outer London have started a legal challenge against London Mayor Sadiq Khan’s decision to expand London’s ultra low emission zone (ULEZ).
The ULEZ is an area in which vehicles that do not meet certain emissions standards must pay a daily charge of £12.50 ($15) to drive or face fines. The scheme currently operates in the areas within London’s North and South Circular roads, covering four million people—around 44 percent of the capital’s population.
