Why are bulldozers the only heavy equipment that have Decelerator pedals instead of accelerator pedals?

Bulldozers are designed primarily for moving heavy materials and performing tasks that require precise control over speed and power. The decelerator pedal allows operators to reduce speed quickly without taking their foot off the pedal, which enhances safety and control in various working conditions. This design prioritizes the bulldozer's functionality in pushing and grading, allowing for better maneuverability and stability on uneven terrain. By using a decelerator pedal, operators can focus on maintaining optimal performance without the risk of accidental acceleration.