Stops VRR

If the data of the Verkehrsverbund Rhein-Ruhr AöR (VRR AöR) becomes part of the OpenStreetMap database work, it is sufficient to mention the VRR AöR in the list of contributors. It is then no longer necessary to mention the VRR AöR for each use of the data also by licensees of the above-mentioned database work. An indirect reference (reference to publisher of the database work, which in turn refers to the VRR AöR) is sufficient.若莱茵-鲁尔交通协会（Verkehrsverbund Rhein-Ruhr AöR）的数据被纳入开放街道地图（OpenStreetMap）数据库项目，则仅需在贡献者列表中提及VRR AöR即可。此后，当该数据库项目的被许可方使用相关数据时，无需再针对每一次数据使用单独标注VRR AöR；仅通过间接引用即可满足要求，即引用该数据库项目的发布方，由其进一步指向VRR AöR。