The continuity lines represent the quasi-linear paths perceived by an observer as a continuous line of movement, as no other choice of movement is offered.
Continuity-lines
Sources
Figueiredo, L. & Amorim, L. (2005), Continuity lines in the axial system, in A Van Nes (ed), 5th International Space Syntax Symposium, TU Delft, Faculty of Architecture, Section of Urban Renewal and Management, Delft, pp. 161-174.pp. 163.