If you have configured the “Asset” (truck) and managed, you can add the truck’s route to transport the items. 
Once you add the waypoints (starting-ending points), click on the ‘truck’ icon to select which truck is required to transport the items. By clicking on the ‘truck’ icon, you will see the Asset Details popup from where you can select the truck and manage other details as well. 
You will see the list of the truck that are added from the Asset in the “Truck Type” drop-down. 
Once all the asset details are configured, click on Go button to get the route to transport the items.