给警告肯定不是打灯的问题，是到了实白线分割线=不允许换道的区域了。警告有了，下次再出啥小问题，逮着就没跑了。

你没拍上面的信息，不好判断是warning还是citation

如果需要交罚款或上庭，你会收到正式的信

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4511.33

A) Whenever any roadway has been divided into two or more clearly marked lanes for traffic, or wherever within municipal corporations traffic is lawfully moving in two or more substantially continuous lines in the same direction, the following rules apply:

(1) A vehicle or trackless trolley shall be driven, as nearly as is practicable, entirely within a single lane or line of traffic and shall not be moved from such lane or line until the driver has first ascertained that such movement can be made with safety.

真的？

登记了