To secure your cargo bike optimally in the city as well as at home, systematically apply these four cumulative rules: An immovable object above all: Use a high-security D-lock (certified FUB “2 roues” or Sold Secure Gold) to attach the frame to a ground-anchored street fixture, ensuring the D-lock does not touch the ground. The two-lock rule: Supplement the D-lock with a robust chain or a frame lock (wheel lock) on the rear wheel, which forces the thief to use different tools. Remove the bike’s “brain”: Always take the battery and display screen with you; an electric cargo bike without these components loses its motor assistance and resale value. Don’t lower your guard at home: Always lock your bike, even in a shared bike room or a locked garage, ideally to a wall or floor anchor.