For customers with a CarrierWatch subscription, you will see alerts in your search results on carriers that are being monitored on your watchlist.
When viewing the details of a truck, in the Company section you will see an alert (red or yellow depending on your watchlist settings in CarrierWatch) if the carrier you are looking at has any sort of alerts. These alerts warn you to such things as the carrier's MC# being invalid, insurance is expiring, or a bad safety rating to name a few.
To see the specifics of the caution or warning, click the View Details link to launch CarrierWatch.