What type of aerial elevated water delivery system allows for remote control of fire stream direction?

The choice of an aerial ladder with a piped waterway and water tower is particularly relevant because it enables firefighters to operate the water delivery system remotely. This setup typically includes a hydraulic system and nozzles that can be adjusted from a distance, allowing precise control over the direction and flow of water onto a fire from an elevated position. This remote operation provides significant tactical advantages, such as maintaining a safe distance from hazards while effectively combating fires in high-rise buildings or difficult-to-access areas.

In contrast, other options lack this specific remote control capability. Aerial ladders with floating platforms are designed primarily for providing a stable working area rather than delivering a concentrated water stream. Standard fire trucks equipped with elevated nozzles may offer some maneuverability but usually do not allow for full remote operation of the water stream. Portable water cannons typically require manual operation and positioning, making them less effective for the kinds of applications that require controlled, elevated water delivery from a distance. Thus, the choice of an aerial ladder with a piped waterway and water tower stands out for its remote control features in firefighting operations.