Abstract: A mechanism for reducing the speed of road traffic and corresponding speed bump. A mechanism for reducing the speed of road traffic on public thoroughfares comprising [a] a collapsible surface (1) which moves between a raised position and a lowered position, where the collapsible surface is normally in the raised position, and [b] retaining means (19) adapted to retaining the collapsible surface in the raised position. The retaining means are activated when the speed of movement of the collapsible surface is greater than a predetermined maximum speed. With this mechanism it is possible to make a speed bump for reducing the speed of road traffic comprising one or two of these mechanisms. If it comprises two mechanisms, each of them has a width of less than 1.2 m and they are spaced apart at a distance such that an automobile rides simultaneously over both mechanisms.

Abstract: A mechanism for reducing the speed of road traffic and corresponding speed bump. A mechanism for reducing the speed of road traffic on public thoroughfares comprising [a] a collapsible surface (1) which moves between a raised position and a lowered position, where the collapsible surface is normally in the raised position, and [b] retaining means (19) adapted to retaining the collapsible surface in the raised position. The retaining means are activated when the speed of movement of the collapsible surface is greater than a predetermined maximum speed. With this mechanism it is possible to make a speed bump for reducing the speed of road traffic comprising one or two of these mechanisms. If it comprises two mechanisms, each of them has a width of less than 1.2 m and they are spaced apart at a distance such that an automobile rides simultaneously over both mechanisms.