to know. From the history of traffic laws to future trends, it helps officers understand the basic elements of traffic enforcement and crash investigation. Beyond just a traffic law manual, it includes social and ethical issues and hot topics such as dealing with official misconduct, quotas, tolerances and officer discretion.  Its strong coverage of DUIs and up-to-date guidelines help prepare officers for one of their primary responsibilities: traffic enforcement, DUI enforcement and crash related investigations.

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