Core Viewpoint - The first batch of Level 4 autonomous buses in Nanjing has entered the road testing phase, with free rides available for citizens starting in early July [1][2]. Group 1: Autonomous Bus Features - The autonomous buses are equipped with multiple radars and cameras, referred to as "big eyes," which help in real-time environmental sensing and target recognition [1][2]. - The buses utilize a sophisticated decision-making algorithm that processes the collected data to perform driving actions such as obstacle avoidance and stopping [2]. - Compared to traditional buses, these autonomous vehicles can more efficiently and reliably identify obstacles and pedestrians, thereby reducing traffic accidents [2]. Group 2: Safety Measures - A safety operator is required to be present on the bus to take control in case of emergencies, ensuring operational safety [2]. - The safety operator has undergone a period of adaptation to the autonomous system, indicating a learning curve associated with the new technology [2]. Group 3: Testing and Implementation - The initial road testing began on April 28, covering at least 1,000 kilometers or 240 hours to ensure safety and reliability before the demonstration phase [3]. - Testing routes include a total distance of approximately 11 kilometers in Qinhuai District and 6 kilometers in Qixia District, showcasing the operational capabilities of the buses [3]. - Nanjing is one of the first cities selected for the "vehicle-road-cloud integration" pilot program, which includes various types of intelligent connected vehicles [3].