American Signal Company’s 131T Digibrite features an all LED, two digit, trailer mounted speed display sign. This radar speed trailer is equipped with a traffic radar operating in an “approach only” mode such that defaults to display the speeds of approaching vehicles exceeding the user selectable “threshhold” or “trigger” speed will be displayed. The 131T Digibrite encourages motorist awareness and work zone safety, and is well suited for both highway and urban use.