Police and emergency services have used codes to keep communication short and effective. While this is helps the emergency respondents, it can be confusing to people listening or participating to emergency broadcasts. Moreover, code definitions can vary from state to state and region to region. Because of this non-standardization, the US government recommended that everyday language be used. Nonetheless, codes are still used frequently. The table below outlines that most commonly used police codes. In addition to the 10 codes, this has the 11 codes, code signals and phonetic alphabet – BONUS!