Composite cable for vehicle and composite cable assembly including same

A composite cable for a vehicle, comprising:

• a communication unit including:
• a pair of communication lines to transmit a sensor sensing signal, and a communication unit jacket layer covering an outside of the pair of communication lines;
• a power unit including a pair of power lines to supply power;
• and,
• a cable jacket layer covering an outside of the communication unit and the power unit,
• wherein the communication unit jacket layer covers the pair of communication lines such that the communication unit has a round cross section, and the thickness of the communication unit jacket layer in a radial direction is 0.4 mm or more, and the communication unit has an outer diameter of 4.1 mm to 4.5 mm, and,
• wherein the conductor of each of the communication lines of the communication unit comprises a self-twist and helically wound conductor, and wherein the self-twist and helically wound conductor comprises one center self-twisted strand and six self-twisted strands arranged around the center self-twisted strand and twisted in a direction opposite to a direction in which the center self-twisted strand is twisted, wherein a direction in which the self-twisted strands are helically wound is the same as a direction in which the center self-twisted strand is twisted.