In case of isolation for fuel conservation, what must be ensured to comply with dynamic brake regulations?

To ensure compliance with dynamic brake regulations during fuel conservation isolation, it is essential that the dynamic brake axles do not exceed specified limits. This requirement is grounded in safety and operational efficiency; dynamic braking is crucial for controlling the speed of the train, particularly on downhill grades or in emergency situations. Each locomotive is designed to function effectively within specific dynamic braking parameters, and exceeding these limits can compromise the train's braking capability, leading to increased stopping distances and potential safety hazards.

Preserving the effectiveness of dynamic brakes ensures that even if some units are isolated to save fuel, the remaining functioning units can still adequately manage the train's braking needs. Maintaining compliance with the design specifications for dynamic braking helps to avoid situations where the train might become difficult to control, thus enhancing overall operational safety.