Accessibility analysis models the access of residents to facilities - assuming people will go to their nearest facility for service.If an analysis is done for a large area, this will show whether provision is sufficient and equitable - if both capacity (threshold) and distance parameters are included.
Reference:
Green, CA. Geographic Accessibility - Providing government servies in an spatially equitable manner: Perspectives for Fire Station location. October 2012
Green, C. A. (2012). Geographic Accessibility - Providing government servies in an spatially equitable manner: Perspectives for Fire Station location. http://hdl.handle.net/10204/6323
Green, Cheri A. "Geographic Accessibility - Providing government servies in an spatially equitable manner: Perspectives for Fire Station location." (2012): http://hdl.handle.net/10204/6323
Green CA, Geographic Accessibility - Providing government servies in an spatially equitable manner: Perspectives for Fire Station location; 2012. http://hdl.handle.net/10204/6323 .