本文件将提供城市ITS背景下混合供应商环境相关标准的背景。它将描述关键的混合供应商环境接口。它将定义:-传感器系统的开放规范:现有开放规范并提供通用规范-交通管制开放规范:现有开放规范和通用规范-交通信息公开规范:现有公开规范和通用规范-公共交通信息系统开放规范:现有开放规范和通用规范-分布式C-ITS的开放规范:现有的开放规范和提供通用规范-中央系统的开放规范:现有的开放规范并提供通用规范它将描述公开使用的专有标准和现有的通信协议可用于城市ITS环境中的混合供应商环境。

This document will provide a background to the relevance of standards concerning mixed vendor environments in the context of urban-ITS. It will describe key mixed vendor environments interfaces. It will define: - Open specifications for sensor systems: existing open specifications and provides common specifications - Open specifications for traffic control: existing open specifications and provides common specifications - Open specifications for traffic information: existing open specifications and provides common specifications - Open specifications for public transport information systems: existing open specifications and provides common specifications - Open specifications for distributed C-ITS: existing open specifications and provides common specifications - Open specifications for central systems: existing open specifications and provides common specifications It will describe openly plied proprietary standards and extant communications protocols that can be used in mixed vendor environments in the context of urban-ITS.