Abstract: An automatic traffic control method and device includes an endless conveyor which is located along a predetermined length of a road for carrying a vehicle travelling in a first direction, the conveyor capable of moving in a second direction opposite to the first direction, thereby reducing the vehicle's virtual speed. A regenerative braking device engages the conveyor to oppose the conveyor movement. The braking device can also be used to reclaim kinetic energy generated by a decelerated vehicle. A sensor senses the vehicle speed and provides a signal to modulate the braking device. A receiver-decoder receives transmitted command signals to modulate the sensor signal, thereby to remotely set a desirable speed limit and ensure the passing vehicles obey the speed limit.

Abstract: A device for heat supply is disclosed having a heat absorber connected to a heat emitter via a heat conductor. The heat absorber collects the throw-away heat bound in the vicinity of the ceiling and transfers it via insulated metal core (that is, the heat conductor) to be emitted proximate the floor. This makes a sizable energy saving while no maintenance is required, and cold feet at home or in the office can be avoided throughout the year.