Abstract: For reliable, failsafe monitoring of the locking of a closure device of a vehicle of a cableway is disclosed in which provision is made for an electrical connection to be established between a vehicle powerline modem on the vehicle and a station powerline modem, which is connected to the cableway controller, via a busbar in the station, with which contact is made by a current collector of the vehicle, and for the locking status of a locking unit to be transmitted from the vehicle to the cableway controller via this connection by means of powerline communication, wherein, in the event of defective locking, the vehicle is stopped in the region of a busbar in the station and the locking status is transmitted to the cableway controller again when the vehicle is at a standstill.

Abstract: A pneumatic vehicle tire including at least one sound absorber adhesively attached to the inner surface opposite the tread in the interior of said tire, wherein the at least one sound absorber adheres to an adhesive, and to an adhesive composition for securing at least one sound absorber to a surface of a pneumatic vehicle tire. The adhesive includes 10% to 80% by weight of at least one rubber, 11% to 80% by weight of at least one polyolefin and 2% to 20% by weight of at least one hydrocarbon resin. The adhesive has optimized flow characteristics and an optimized stickiness.

Abstract: An optical coherent receiver in one embodiment has a heterodyne configuration, and in another embodiment has a homodyne configuration, in each configuration employs multiple feedback signaling and analog/digital processing to optimize response to a modulated optical input signal, the provision of both individual RF I and RF Q channel outputs.