https://telegra.ph/What-Is-Van....-Security-Lock-Histo
Van Security Upgrades For the Ford Transit and Ford Transit Custom Van owners can upgrade their vans to safeguard their possessions. These include deadlocks, high-security locks, and a van slam. The Tibbe lock system uses rotating discs and a sidebar to prevent break-ins. Each disc is set according to the angles cut on the key blade. This system is very rugged and resistant to picking. High-security locks The standard driver's door lock in the Ford Transit and Ford Transit Custom is susceptible to attack fr