I have a question relating to the documentation required when sending goods to a client by road with an LC. Normally for sea transport to receive goods I had to pay the supplier before the bank would release the documents and then in turn I could take the goods from the port. In the case of road transport where the destination is the consignees warehouse how do I ensure that the goods are paid for before they have posession of them?

Does the CMR act as the B/L in this case? As a supplier I send the relevant documentation to the clients bank so they can pay the value and recieve the goods. Should this be done before the goods leave my premises? If so how will I obtain a CMR to send to the clients bank as it wouldnt be signed by the transport company as they havent as yet taken charge of the goods. 

Thanks in advance