The new Mayor, Sadiq Khan, has promised to make cycling in London safe and enjoyable for everyone. But many people are still too scared to take their bikes onto the capital's roads.
A new campaign called 'Give a Beep' wants to help. By using a digital button on bikes, cyclists can collect data about hazardous streets and junctions.
Every time they press the button an email will be sent to the Mayor to make him aware and encourage him to keep his promise.
Amy Summers is from the London Cycling Campaign.