Abstract: A versatile traffic information system (1) comprises: a light source (10), designed for generating a relative narrow, intense light beam (11); housing means (100) adapted for being mounted adjacent or above a road surface (3), accommodating the light source (10), having a beam exit window (101) for allowing the light beam (11) to exit the housing; a controllable beam deflection system (20), capable of changing a direction of the light beam (11) towards a projection area (2) on the road surface (3) in order to form a relatively small light spot (12) on the projection area (2);- a control circuit (30) for controlling the controllable beam deflection system (20) such as to effectively make the light spot (12) draw a predefined pattern (4) on the projection area (2).

Abstract: An event detection system (100) comprises: a communication network of interconnected nodes (10) and a central control station (200), each node being capable of communicating to at least one adjacent node and/or to the central control station, each node comprising: at least one microphone (11); a GPS receiver (12, 13) providing information regarding its location and providing time information; a processing circuit (17), capable of processing the microphone signals, the processing circuit being designed to detect the occurrence of predetermined characteristic sound patterns, and if the occurrence of a predetermined characteristic sound pattern is detected, to communicate the detected event to the central station, together with information regarding location of the node and time of detection; wherein the central station is designed to process the information received from the nodes and to determine the location of the audio source and the occurrence time of the event.

Abstract: A lamp (1), for use in street lighting, is provided with a small network element (10), which preferably is arranged within a lamp fitting (5). The network element is provided with a switching facility, for switching the lamp ON or OFF in response to a corresponding command. The network element is provided with a dimming facility, for dimming the lamp in response to a corresponding command. The network elements (10) are nodes in a low cost and fast communications network which is quickly to install. The network may provide a fine-mazed and relatively low-cost positioning system.