Olympic cyclist Chris Boardman's road safety call to PM
18 December 2013 Last updated at 10:05 GMT
Britain has been building roads that prioritise cars, buses and lorries for years - but not for people on two legs or two wheels - said Chris Boardman.
The Olympic gold cyclist said the UK should look at Copenhagen, which he said took a "bold decision" to prioritise pedestrians and cyclists, and now more than a third of people there commute by bike.
And he called on councils to look at restrictions in Dublin and Paris where the largest lorries can only enter the city during off-peak hours.
In a personal film for BBC2's Daily Politics, Mr Boardman called on the prime minister - who pledged to "cycle-proof" new roads and junctions, to "turn those words into action".
He will debate his film with MPs on Wednesday's programme around 12:40 BST, which will be on iPlayer for seven days.