Reinventing Setback Regulations for Universal and Sustainable New Mobility Integration

American suburban neighborhoods house growing and increasingly diverse communities, offering appealing living features yet facing longstanding criticism for their negative externalities. Integrating new mobility technologies presents promising solutions to address some of these issues. However, current regulatory approaches—particularly setback regulations—impede the accommodation of essential new mobility infrastructure and hinder universal access to it. Moreover, strict setback requirements limit the transformative potential of new mobility to reconfigure residential blocks for enhanced environmental sustainability. Little research has explored alternative approaches to overcome these limitations. In response, this study proposes a new regulatory framework, Street Canyon Management (SCM), to achieve universal and sustainable new mobility integration. SCM incorporates three key processes—scenario building, trade-off analysis, and performance-oriented evaluation—to systematically coordinate interconnected spatial elements within the street canyon, providing the flexibility needed for effective new mobility integration. When applied to a real-world low-density residential development, SCM demonstrates its capacity to promote universal and sustainable new mobility integration, delivering improved walkability, expanded buildable space, and enhanced landscape continuity—all without significantly altering development density. Although tailored for low-density American suburban contexts, SCM can be adapted for higher-density developments and applied globally wherever setbacks are used as critical regulatory tools, offering a practical framework for decision-makers to shape future neighborhood development.