Abstract: In one aspect, a reception means receives, from a roadside device, first information transmitted from a mobile body by using a first wireless communication. An identification means identifies, based on information of a terminal apparatus to be managed by an information management means, the terminal apparatus being located in the vicinity of the mobile body that has transmitted the first information. A transmission means transmits second information generated based on the first information, to the terminal apparatus identified by the identification means via a second wireless communication.

Abstract: An evaporative-cooling condensation type ammonia refrigeration unit with leaked ammonia gas removing means is provided. Recovery of a leaked ammonia gas is conducted taking advantage of a high solubility of ammonia in water, wherein the leaked ammonia gas is dissolved in a cooling water used for an evaporative condenser. The construction of the unit is characterized by including an ammonia absorptive structure in a gas/liquid countercurrent mode provided in a space on the lower side of the evaporative condenser accommodated in an upper chamber.