Rule 20.0

20.0    Backbone means an auxiliary span support for pull–offs and cross–spans to trolley contact conductors to which it is approximately parallel.

Strikeout and Underline Version

Rule 20.0

20.0    Backbone means an auxiliary span support for pull–offs and cross–spans to trolley contact conductors to which it is approximately parallel.

Antenna means a device for emitting and/or receiving radio frequency signals.

Final Version

Rule 20.0

20.0    Antenna means a device for emitting and/or receiving radio frequency signals.