“Accessible Urban Mobility: Four City Intersections Upgraded With Acoustic Warning and Call Systems for Safer Pedestrian Crossings”Efforts to make urban transport infrastructure more inclusive have received a major boost following the installation of acoustic warning and pedestrian call systems at four city traffic light intersections, a move designed to improve road safety and accessibility for people who are blind, visually impaired, and other vulnerable road users. The upgraded traffic signal systems use audible alerts and pedestrian call features to indicate when it is safe to cross. Globally, cities are increasingly adopting accessible pedestrian signal (APS) technology as governments seek to improve road safety and comply with disability inclusion policies. Recent projects in cities such as Chicago, Singapore and Vitoria Gasteiz have highlighted growing investments in acoustic traffic systems that provide audible and tactile guidance for pedestrians with visual impairments. As cities worldwide continue to invest in intelligent transport systems, the deployment of acoustic warning and pedestrian call technologies is expected to become a standard feature of future traffic infrastructure, supporting safer, more equitable, and more accessible urban environments.