Parents could be banned from driving their kids to school gates under new lockdown plans to ensure social distancing remains in place.
Roads are to be temporarily closed near schools when parents drop off and pick up their children, according to reports.
The measures are expected to deter people from driving on the school run and encourage more walking, cycling and scooting.
Some cities, including London and Manchester, have already established measures to restrict traffic - and more are expected to follow suit.
Will Norman, London’s walking and cycling commissioner, told the Observer : "It will mean timed restrictions on traffic around schools to allow people to safely walk to school, cycle to school, scoot to school.
"I don’t mind if they are on space hoppers as long as it’s not by car.
"You need to reduce the amount of traffic to allow pupils and parents to walk safely.”
Mr Norman said there would be an added danger to parents and children who would have to keep two metres apart if the roads were busy near schools.
He added: "The last thing we want is kids and their parents stepping into a busy road or to see increasing air quality problems around schools."
It is also believed that if a big number of parents drive their children to school, there will be a rapid rise in pollution levels around schools.
The length of time temporary road closures around schools would last, and how they would work, will be decided by the local councils.
The move comes after Transport Secretary Grant Shapps announced a ￡2billion scheme “to put cycling and walking at the heart of our transport policy”.
He said: "Whilst it's crucial that we stay at home, when the country does get back to work we need to ask those people to carry on cycling or walking and for them to be joined by many others as well."
He added a national cycling plan will be published in early June to help double cycling and increase walking by 2025.
Primary schools could begin to be reopened to all children from June 1,? Boris Johnson ?said this evening.
Education facilities have only been open to the children of key workers since the UK went into lockdown over the? coronavirus ?pandemic on March 23.
The PM said: "At the earliest by June 1 – after half term – we believe we may be in a position to begin the phased reopening of shops and to get primary pupils back into schools, in stages, beginning with reception, Year 1 and Year 6.
"Our ambition is that secondary pupils facing exams next year will get at least some time with their teachers before the holidays.
"And we will shortly be setting out detailed guidance on how to make it work in schools and shops and on transport."
A study commissioned by Parentkind found around one in ten parents only wanted to send their kids back when staff and pupils had been vaccinated against Covid-19 - even if this took up to 18 months.
A further 23 per cent said they would only be content when the Government says it is safe to return.
But nearly one in five parents - 18 per cent - said they would only feel confident in sending their child back to school when school leaders and teachers said it was safe to do so.
The leaders of the National Education Union and Parentkind have signed a joint letter to the Education Secretary calling for the Government not to rush into any decisions about the reopening of schools.
Kevin Courtney, joint general secretary of the NEU, said: "The support for our petition is the clear result of a further weekend of intense speculation in the press about possible return dates.
"Parents, teachers, heads and school staff are wanting to make their voices heard as anticipation grows. They are rightly anxious for government to listen and do the right thing."