There are numerous ways to switch your equipment besides tapping the driver's name card on the home screen:
Main Navigation Menu
Select the Vehicle ID or Trailer ID drop-down list > select the required vehicle or trailer > tap Switch to switch to the selected vehicle or trailer.
After tapping the Switch button to perform a vehicle DVIR, tap YES to navigate to the Vehicle DVIR screen or tap NO to close the dialog box and continue. Switch equipment can be performed also in the dashboard by tapping the Vehicle/Trailer icon.
Vehicles and Trailers can also be filtered through text entry on the vehicle/trailer text fields. Text entry availability starts if the total number of trailers/vehicles numbers 250 or more.
For more details, watch "How to switch Vehicles in the HOS App"