A £300 million programme of investment will see 33 of London’s most notorious road junctions upgraded to make them safer and less threatening for cyclists and pedestrians.More than 150 cyclists and pedestrians have been killed or seriously injured at these 33 locations in the last three years.Transport for London (TfL) has announced that gyratories at Archway, Aldgate, Swiss Cottage and Wandsworth, among others, will be ripped out and replaced with two-way roads, segregated cycle tracks and new traffic-free public space.The Elephant & Castle roundabout, London’s highest cycle casualty location, will be removed.At other intimidating gyratories, such as Hammersmith and Vauxhall, safe and direct segregated cycle tracks will be installed, pending more radical transformations of these areas in the medium term.Detailed designs for the first schemes will be published next month and work will begin in the second half of this year.The Mayor of London, Boris Johnson, said: “These road junctions are relics of the 1960s which blight and menace whole neighbourhoods. Like so much from that era, they’re also atrociously-designed and wasteful of space. Because of that, we can turn these junctions into more civilised places for cyclists and pedestrians, while at the same time maintaining their traffic function.”As announced in the Mayor’s Cycling Vision, the junction programme has been fundamentally refocused away from making minor, often cosmetic changes at a large number of junctions to delivering real and transformational change at the busiest and worst junctions.The pre-Cycling Vision programme would have divided £19 million between 100 junctions, an average of £190,000 per junction. The new programme commits in the region of £300 million to just 33 major junctions, an average of £9 million per junction.Leon Daniels, managing director of surface transport at TfL, added: “For over a year our designers and engineers have been working flat out to develop new junction designs for these 33 locations to completely change how they operate, transforming their areas for cyclists, pedestrians and the wider local community. They are some of the busiest traffic intersections in Europe, so this work has been complicated. But we are now fully committed to delivering these junction improvements as quickly as possible, making London safer and more inviting for all.”Full list of junctions:1. Aldgate Gyratory2. Apex Junction (part of Shoreditch Triangle)3. Archway Gyratory4. Blackfriars5. Borough High Street/Tooley Street Junction6. Bow Roundabout7. Chiswick Roundabout/Kew Bridge Junction8. Elephant & Castle Northern Roundabout9. Great Portland Street Gyratory10. Hammersmith Broadway Gyratory11. Highbury Corner12. King’s Cross13. Lambeth Bridge Northern Roundabout14. Lambeth Bridge Southern Roundabout15. Lancaster Gate Gyratory16. Marble Arch Gyratory17. Nag’s Head Gyratory18. Old Street Roundabout19. Oval Triangle20. Parliament Square21. Rotherhithe Roundabout22. Spur Road Gyratory23. St Paul’s Gyratory24. Stockwell Gyratory25. Stratford Gyratory26. Surrey Quays Gyratory27. Swiss Cottage Gyratory28. Tower Gateway29. Vauxhall Cross Gyratory30. Wandsworth Town Centre Gyratory31. Waterloo Roundabout32. Westminster Bridge Road33. Woolwich Road/A102 Junction