of fig5 of the drawings is shown exposing one of the plurality of shaft support bearings 17 in the vicinity of the 34 in road 34 extremity of the speed bump unit the speed bump shaft 13 the trough container comprising of components 21 23 39 39 45 39 47 and 53 all constructed of steel or other durable materials are shown installed within the roadway or street surface identified generally as area 2 as an integral part of this speed bump design and or installation the base plate of the trough item 53 is sloped downwards to the road embankment drainage swale gutter soak away pit or sump being part of the vault or storm sewer manhole drainage facility referring to fig8 a of the drawings a partial cross sectional view of a preferred embodiment of the device 12 taken along line 8a 8a of fig1 is shown in the retracted flat position installed in the roadway more clearly exposing the layout and arrangement of the components and in particular one of each of a plurality of the locking stops or teeth 15 and locking cams 35 at their respective inactive positions the locking cams 35 are shown fixed to and supported by a locking shaft or spindle 37.