Central City Portland Parking Demand Analysis


Working with the City of Portland, Lancaster conducted a detailed study of supply and demand of on-street parking throughout the central city. The project study area consisted of approximately 300 block faces organized into 17 walking routes. Parking supply data collected included numbers of stalls, stall types, maximum time stays, and other relevant parameters. Following the collection of supply data, utilization data was collected over a 15-hour period for each route to determine occupancy, lengths of stay, peak periods, and usage of special stall types. Lancaster pioneered a data collection protocol using waterproof, portable electronic tablets, which enabled data to be collected directly into route-specific spreadsheets. This ensured high quality data by removing potential for data entry errors in transcribing written field notes; keeping data collectors on the correct route and block face, and enabling real-time monitoring of data during the collection process.