Why should aerial apparatus driver/operators use slow to moderate operational speed in extremely low temperature conditions?

Using slow to moderate operational speeds in extremely low temperature conditions is essential to minimize shock loading to structural members. When temperatures drop significantly, materials—especially metals and plastics—can become more brittle. If an aerial apparatus is operated at high speeds, even small bumps or jolts can transmit shock loads that exceed the material's tolerance, potentially leading to structural damage.

In cold weather, the stress placed on these components can lead to rapid fatigue and failure. By driving at reduced speeds, the driver/operator allows for gentler maneuvering over the terrain, thus reducing the likelihood of imposing sudden impacts on the structure of the aerial apparatus. This careful handling preserves the integrity and longevity of critical components, ensuring they can perform reliably when needed.

While other factors like fuel savings, tire wear, and emissions might also be indirectly influenced by speed, the primary concern in frigid conditions is the structural integrity of the aerial apparatus, making the need to minimize shock loading the most pertinent reason for maintaining a slow to moderate speed.