Both of the Southwest pilots involved in this incident over the weekend told the air traffic controller that they received alarms from their collision avoidance systems that directed them to take action with one plane climbing while the other dove to avoid the potential midair collision.
The real problem is infrastructure, not vehicle safety. Roadways are open systems with infinite variables—weather, pedestrians, distracted drivers, and aging infrastructure. Communication between vehicles is minimal, and infrastructure is largely silent—and in that gap lies the potential for deadly collisions.
The airspace over Los Angeles is among the most congested in the world, but the Hollywood Burbank Airport is uniquely situated, creating extremely tight parameters around the midsize airport.