Extreme hot weather grinding parts of the UK's transport network to a halt is a problem that will take "decades" to solve, the Transport Secretary said on Tuesday.
Grant Shapps admitted that Britain's rail and road infrastructure needs to be drastically upgraded to cope with climate change.
Train services across the country were disrupted on Tuesday as the country faced record temperatures of almost 40C.
Council gritters in many areas are also on stand-by to spread sand on melting roads.
Mr Shapps said train tracks can buckle and overhead powerlines on the railway can sag during extreme hot weather, which means services have to be cancelled or run with speed delays.
"We're going to see this a lot more regularly," he told Sky News.
"We know that we've seen many of the hottest days ever recorded have come in the last 10 to 15 years. So we're going to see this more."
TfL is running a significantly reduced service with severe delays on many Tube lines.
Most Thameslink and Great Northern services in London have been cancelled. Merseyrail said the number of trains running and journey times will be "seriously affected", with some routes closed completely.
LNER is not running trains from York to London King's Cross and Southern, South Eastern, South Western Railway and Great Western Railway are among the dozens of train companies who have significantly reduced services because of the sweltering weather.
Asked how long it will take to upgrade existing rail infrastructure to be more resilient, Mr Shapps added: "Decades, actually, to replace it all. Ditto with Tarmac on the roads.
"There's a long process of replacing it and upgrading it to withstand temperatures, either very hot or sometimes much colder than we've been used to, and these are the impacts of global warming."
He added that there was no emergency Cobra meeting planned for Tuesday. Prime Minister Boris Johnson will instead chair a Cabinet meeting.
It comes after Tory MP John Redwood said people should stop complaining about the scorching heat.
The former Welsh Secretary said on Tuesday: "Why do some want to fly to places with hot weather for holidays yet complain when the hot weather turns up here?
"Glad I will be holidaying in England."
