Parking Space Line Violations and Unit Parking Space Planning in Older Parking Facilities

Purpose: This study investigates the current parking conditions in older parking lots that do not meet modern standards, aiming to identify prevalent issues and propose effective alternatives to optimize parking space utilization. Methods: The research was conducted in two phases: a status survey and a brainstorming-based policy inquiry. First, 84 parking lots constructed prior to the 2018 amendment of the Enforcement Rule of the Parking Lot Act were randomly selected. A total of 11,529 parking stalls were surveyed to analyze parking violations. Second, brainstorming sessions were held with parking lot users to derive practical countermeasures and improvement plans for older facilities. Results: The survey revealed frequent lateral line violations, where vehicles occupied multiple stalls, making it difficult for adjacent cars to park. Additionally, numerous instances of forward protrusion were observed, obstructing the movement of vehicles in opposite aisles. To address these issues, proposed improvements included the installation of physical bollards and the adoption of block-based parking lines. The results suggest that rectifying these parking behaviors could potentially increase available parking capacity by approximately up to 14.3% without physical expansion.