Abstract: A circulating fluid regulated braking device for air and land vehicles, which comprises an oil or similar fluid boost pump mounted on a steady support plate adjacent to each vehicle wheel. The pump is linked to a toothed wheel that engages another toothed wheel being an integral part of the hub of the vehicle wheel; said toothed wheels being housed in a hermetically sealed enclosure. The pumps mounted on front wheels are connected by means of pipes, to a primary two-way valve which, in turn, is connected by means of pipes to a primary oil or similar fluid storage tank, thus constituting a completely independent front wheel brake hydraulic circuit. The pumps mounted on rear wheels are connected by means of pipes, to a secondary two-way valve which, in turn, is connected by means of pipes to a secondary oil or similar fluid storage tank, thus constituting a completely independent rear wheel brake hydraulic circuit.