This document discusses prioritizing cycling improvements in York using a Cycling Propensity Tool (PCT). The PCT models current and potential cycling levels based on Census data on commuting distances, hilliness, and gender. It shows that in York, cycling to work could increase from 12.4% currently to around 25% by 2025 with a dense, joined-up cycling network. The document proposes comparing current cycling flows to targets, current network provision to targets, and conducting a cost-benefit analysis of improvement options as a case study for a new prioritization tool project.