Automatic Transmissions Gain in Favor

Issue 3 and Volume 117.

Automatic Transmissions Gain in Favor ACCELERATION and top speed are two of the most important performance requirements of a fire or crash vehicle. When the alarm sounds, getting to the scene fast, with all equipment necessary to combat the blaze, is of prime importance. Suggested specifications by the National Board of Fire Underwriters (NBFU 19) for all motor fire apparatus state that from a standing start through the gears the vehicle shall attain a true speed of 35 mph within 30 seconds. And from a steady speed of 15 mph in direct drive, the vehicle shall accelerate to a speed of 35 mph within 30 seconds. Top speed shall be not less than 50 mph. The tests shall be with apparatus fully loaded—men, hose, equipment, water tank filled, etc. —and on paved roads, dry and in good condition. To establish minimum and uniform performance standards for aircraft fire and rescue…

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