当前的流量系统允许附属公司以基于时间或基于事件的“窗口”格式安排商业广告的插入。如SCTE 118-1所述，基于时间和基于事件的预订都是基于内容提供商的通信提前设置的。 本文件描述了实现与特定于节目的广告插入相关功能的实施要求。特定于节目的广告插入是基于SCTE 35提示消息中传递的节目标识符，将一个点安排并插入到数字广播节目中。 本文件未指定交通系统所需数据的来源。这些数据可以由内容提供商或第三方（如网络计划聚合器等）提供。 ).可以提供全部数据，也可以提供部分数据，然后手动补充。

Current Traffic Systems allow Affiliates to schedule the insertion of commercial advertising in either a Time-Based or Event-Based "window" format. Both Time-Based and Event-Based reservations are setup well in advance based on communication from the content provider as described in SCTE 118-1. This document describes implementation requirements to achieve the functionality associated with Program-Specific Ad Insertion. Program-Specific Ad Insertion is the scheduling and insertion of a Spot into a digital broadcast Program based on the program identifier passed in the SCTE 35 Cue Message. This document does not specify the source of the data that is required by the Traffic System. This data may be provided by the content provider or by a 3rd party (such as a network schedule aggregator, etc.). The data may be provided in its entirety, or a subset of the data may be provided and then manually supplemented.