If you don’t hear any voice alerts but have seen the green, yellow or red alert screen, check your mute switch and volume controls located on your iPhone’s upper left to ensure they are switched on.

If you have neither seen alert screens nor heard voice alerts, the street you are traveling may not be covered by the system. If you continue to experience this while driving on major highways or other roads, contact ta-support@greenowlmobile.com, and we will investigate further.