In recent years, the rapid development of unmanned aerial vehicle short distance logistics transportation in urban scenarios has led to widespread attention to urban airspace planning issues. Route intersections where unmanned aerial vehicle routes converge was selected as the research object. Firstly, the design influencing factors and current research status of route intersections were analyzed. Then, controlled level crossings were selected for research, and the ground "signal lamp" strategy was introduced for optimization. Based on the operational characteristics of level crossings and unmanned aerial vehicles, a universal intersection model was proposed for unmanned aerial vehicle routes and an optimized control strategy for signal lamp. In the real environment of Hangzhou Huazheng UAV takeoff and landing site, simulation has verified that the control strategy proposed can reduce average delay while ensuring traffic capacity. Results have important guiding significance for the design and control of future unmanned aerial vehicle route intersections.