London’s traffic lights have gone LGBT in celebration of the city’s upcoming Pride festival.

The new lights appearing on selected crossings around the Trafalgar Square featuring the green man holding hands with another green man, forming a heart symbol in the centre.

The group behind the lights, Transport for London (TfL) borrowed the idea from Vienna, who last year adopted same-sex themed traffic lights in honour of the Eurovision Song Contest, hosted by Austria in 2015.

New London Mayor Sadiq Khan, praised the display of “tolerance and celebration” across the city.

“Our thoughts and prayers are, of course, still with the families and friends of the victims of the hideous recent attack in Orlando,” said Sadiq Khan, Mayor of London.

“These new signals show that we stand shoulder to shoulder with them, and display the tolerance and celebration of difference in our city.”

There will be seven different symbols in all, featuring people holding hands and gender-related icons.

“It’s fantastic that London is a city so keen to celebrate Pride that even traffic lights can be used,” said Alison Camps, Director at Pride in London. “This small symbol is a big gesture from the Mayor of London and TFL, and we’re delighted to have their support. For many people acceptance and tolerance is a luxury they don’t have, and these lights are another display of how welcoming and accepting London is,” she told Gay Times.

The 50 or so LGBT lights can be glimpsed on pedestrian crossings around Trafalgar Square this month as part of London’s Pride festival.