Equipment for machining solid surfaces such as for example, surfaces made of asphalt or concrete or similar solid materials, in particular for making sound strips, said equipment comprising rotating machining or digging means carried by a main frame, and rotating means which engage said main supporting frame, wherein the rotation of said rotating means in a predefined direction of rotation results in said main supporting frame being rotated alternately in two opposite directions of rotation.

The low maintenance speed bump is an elongated, rigid, solid body having an arcuate top surface and a flat base, angled grooves defined in the top surface, and a reflective material disposed within the grooves. The reflective material is disposed lower than the top surface of the speed bump to prevent contact between vehicles passing over the speed bump and the reflective material. In this manner, the reflective material is protected from damage by vehicle tires and the life of the reflective material is extended. Further, the angled grooves provide greater visibility of the reflective material to drivers approaching the speed bump.

The low maintenance speed bump is an elongated, rigid, solid body having an arcuate top surface and a flat base, angled grooves defined in the top surface, and a reflective material disposed within the grooves. The reflective material is disposed lower than the top surface of the speed bump to prevent contact between vehicles passing over the speed bump and the reflective material. In this manner, the reflective material is protected from damage by vehicle tires and the life of the reflective material is extended. Further, the angled grooves provide greater visibility of the reflective material to drivers approaching the speed bump.

Compositions, methods, and products that improve the adhesion of markings, for example, thermoplastic road markings, to substrates are disclosed. In some embodiments, such thermoplastic road markings include, but are not limited to, striping, solid lines, broken lines, and other traffic safety or informative markings placed on a substrate.

Compositions, methods, and products that improve the adhesion of markings, for example, thermoplastic road markings, to substrates are disclosed. In some embodiments, such thermoplastic road markings include, but are not limited to, striping, solid lines, broken lines, and other traffic safety or informative markings placed on a substrate.

A regenerative speed bump includes a flat base portion and a sloped cover portion which together form a cavity to house a regenerative energy mechanism therein. The sloped cover portion is flexible and configured to deflect downward upon application of force. The regenerative energy mechanism includes a main gear having an axis of rotation and an inner ring of ratchets, a plunger positioned along the axis of rotation and rotates the main gear by motion thereof along the axis of rotation, and a pawl configured to allow the inner ring of ratchets and the main gear to rotate in only one direction. The plunger is mechanically connected to the sloped cover portion such that the plunger moves down along the axis of rotation when the sloped cover portion deflects downward.

A regenerative speed bump includes a flat base portion and a sloped cover portion which together form a cavity to house a regenerative energy mechanism therein. The sloped cover portion is flexible and configured to deflect downward upon application of force. The regenerative energy mechanism includes a main gear having an axis of rotation and an inner ring of ratchets, a plunger positioned along the axis of rotation and rotates the main gear by motion thereof along the axis of rotation, and a pawl configured to allow the inner ring of ratchets and the main gear to rotate in only one direction. The plunger is mechanically connected to the sloped cover portion such that the plunger moves down along the axis of rotation when the sloped cover portion deflects downward.

A traffic calming device comprising an obstacle which is placed on a road, the obstacle being moveable or deflateable at a predetermined speed or rate so that the obstacle presents a smaller profile to a vehicle driving at or below the speed limit.

A traffic calming device comprising an obstacle which is placed on a road, the obstacle being moveable or deflateable at a predetermined speed or rate so that the obstacle presents a smaller profile to a vehicle driving at or below the speed limit.

The low maintenance speed bump is an elongated, rigid, solid body having an arcuate top surface and a flat base, angled grooves defined in the top surface, and a reflective material disposed within the grooves. The reflective material is disposed lower than the top surface of the speed bump to prevent contact between vehicles passing over the speed bump and the reflective material. In this manner, the reflective material is protected from damage by vehicle tires and the life of the reflective material is extended. Further, the angled grooves provide greater visibility of the reflective material to drivers approaching the speed bump.