The bus is the data link in a bus network. The bus can transmit data in either direction, and if any network segment is severed, all network transmission ceases.
A host on a bus network is called a station or workstation. In a bus network, every station receives all network traffic, and the traffic generated by each station has equal transmission priority. Each network segment is, therefore, a collision domain. In order for nodes to transmit on the same cable simultaneously, they use a media access control technology such as carrier sense multiple access (CSMA) or a bus master.
^Knott, Geoffrey; Waites, Nick (2002). BTEC Nationals for IT Practitioners. Brancepeth Computer Publications. p. 395. ISBN0-9538848-2-1. ...all stations have equal priority in using the network to transmit.