“…Maintaining the option to vary the spatial and temporal component in the probability formulas ( Table 1 ) allows researchers to address various issues or circumstances relevant to their recreational systems. These issues include crowding and congestion ( Arnberger & Brandenburg, 2007 ; Sever et al, 2018 ), learning more about trail use dynamics ( Kotut, Horning, & McCrickard, 2020 ), and better understanding human and wildlife encounters ( Waldron, Welch, Holloway, & Mousseau, 2013 ). Many studies that focus on crowding are based on trail counters, surveys, and interviews ( Arnberger & Brandenburg, 2007 ; Lindsey & Nguyen, 2004 ; Needham, Rollins, & Wodd, 2004 ).…”