The mayor of London defended his push to cut car use by adding thousands of pounds to the cost of driving in the capital while insisting he is not anti-car.
Sadiq Khan, who says the city is facing a climate emergency, wants to expand the ultra-low emissions zone – and a £12.50 ($17.3) daily charge – to a much wider area of London.
He suggested the roads should only be available for those without alternative forms of transport.
"Where you can give up using cars, I would encourage that," Mr Khan said.
"We can avoid a health crisis that is around air quality and obesity but [it] will also mean that those who do need to use the roads for good reason, [if] you are a black-cab driver, electrician, plumber, blue-light services, delivery driver and so forth, [you] are not stuck in traffic and frustrated about productivity when others who have alternatives aren't using them."
Mr Khan was elected mayor partly on a promise to cut air pollution in the capital and the new proposal comes ahead of elections in May.
It would mean, with only a few exceptions, that pre-September 2015 diesel vehicles and pre-2005 cars would have to pay the daily fee if they drive inside the expanded zone. Drivers who then continue into central London would also pay an extra £15 congestion charge.
"It's the poorest Londoners, who are least likely to own cars, who suffer the worst consequences of bad quality of air," he said.
"It's children living in the poorest parts of London who will have stunted lungs forever because of the bad quality air, and adults who don't own cars who have heart conditions and cancer because of poor quality air."
Last week, the UK set into law the world's most ambitious climate target, pledging to cut carbon emissions by 78 per cent by 2035, compared with 1990 levels.
Prime Minister Boris Johnson called on global leaders and businesses to match that level of ambition ahead of the COP26 summit in November, to limit global warming to 1.5°C above pre-industrial levels.
President Joe Biden announced the US would aim to halve its carbon emissions from 2005 levels by 2030.
And Mr Khan outlined his plan for traffic in London.
"The choice for our generation should be: are we the last generation not to get it, or the first generation to get it? I think it's a false choice about addressing the climate change emergency or damaging the economy," he said.
"Our city will grind to a halt if everyone returns to their cars. As it is, we are already seeing in some parts of London traffic back to what it was before the pandemic.
"Four out of 10 children under 11 are obese or overweight, so for me it [reducing car usage] is a win-win ... I am not anti-car; I am pro the green agenda and pro good air quality."
Babumoshai Bandookbaaz
Director: Kushan Nandy
Starring: Nawazuddin Siddiqui, Bidita Bag, Jatin Goswami
Three stars
Tuesday's fixtures
Kyrgyzstan v Qatar, 5.45pm
The specs
Engine: 2.0-litre four-cylinder turbo
Power: 178hp at 5,500rpm
Torque: 280Nm at 1,350-4,200rpm
Transmission: seven-speed dual-clutch auto
Price: from Dh209,000
On sale: now
The President's Cake
Director: Hasan Hadi
Starring: Baneen Ahmad Nayyef, Waheed Thabet Khreibat, Sajad Mohamad Qasem
Rating: 4/5
Milestones on the road to union
1970
October 26: Bahrain withdraws from a proposal to create a federation of nine with the seven Trucial States and Qatar.
December: Ahmed Al Suwaidi visits New York to discuss potential UN membership.
1971
March 1: Alex Douglas Hume, Conservative foreign secretary confirms that Britain will leave the Gulf and “strongly supports” the creation of a Union of Arab Emirates.
July 12: Historic meeting at which Sheikh Zayed and Sheikh Rashid make a binding agreement to create what will become the UAE.
July 18: It is announced that the UAE will be formed from six emirates, with a proposed constitution signed. RAK is not yet part of the agreement.
August 6: The fifth anniversary of Sheikh Zayed becoming Ruler of Abu Dhabi, with official celebrations deferred until later in the year.
August 15: Bahrain becomes independent.
September 3: Qatar becomes independent.
November 23-25: Meeting with Sheikh Zayed and Sheikh Rashid and senior British officials to fix December 2 as date of creation of the UAE.
November 29: At 5.30pm Iranian forces seize the Greater and Lesser Tunbs by force.
November 30: Despite a power sharing agreement, Tehran takes full control of Abu Musa.
November 31: UK officials visit all six participating Emirates to formally end the Trucial States treaties
December 2: 11am, Dubai. New Supreme Council formally elects Sheikh Zayed as President. Treaty of Friendship signed with the UK. 11.30am. Flag raising ceremony at Union House and Al Manhal Palace in Abu Dhabi witnessed by Sheikh Khalifa, then Crown Prince of Abu Dhabi.
December 6: Arab League formally admits the UAE. The first British Ambassador presents his credentials to Sheikh Zayed.
December 9: UAE joins the United Nations.
WHAT IS A BLACK HOLE?
1. Black holes are objects whose gravity is so strong not even light can escape their pull
2. They can be created when massive stars collapse under their own weight
3. Large black holes can also be formed when smaller ones collide and merge
4. The biggest black holes lurk at the centre of many galaxies, including our own
5. Astronomers believe that when the universe was very young, black holes affected how galaxies formed
Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory
Brief scores:
Pakistan (1st innings) 181: Babar 71; Olivier 6-37
South Africa (1st innings) 223: Bavuma 53; Amir 4-62
Pakistan (2nd innings) 190: Masood 65, Imam 57; Olivier 5-59
New Zealand squad
Tim Southee (capt), Trent Boult (games 4 and 5), Colin de Grandhomme, Lockie Ferguson (games 1-3), Martin Guptill, Scott Kuggeleijn, Daryl Mitchell, Colin Munro, Jimmy Neesham, Mitchell Santner, Tim Seifert, Ish Sodhi, Ross Taylor, Blair Tickner
UAE currency: the story behind the money in your pockets
RESULT
Bournemouth 0 Southampton 3 (Djenepo (37', Redmond 45' 1, 59')
Man of the match Nathan Redmond (Southampton)