Emergency Vehicle Operations and Physical Fitness
The exemption is conditional
G.S. 20-145 allows an authorized emergency vehicle to exceed speed limits and to disregard certain parking and standing rules while responding to an emergency call, but only with appropriate warning signals and always with due regard for the safety of all persons. G.S. 20-156 requires other drivers to yield to an emergency vehicle using its lights and siren. Neither statute grants an absolute right-of-way, and the exemption does not immunize negligent driving. Move-over duties under G.S. 20-157 apply to you as a driver, and to the public when they pass you on a stop.
Vehicle dynamics
Weight transfer under braking and cornering, tire contact patch, and the square-law relationship between speed and stopping distance matter more than horsepower. Know threshold braking, ABS behavior, skid recovery, serpentine control, and backing procedures using G.O.A.L. (get out and look) plus a spotter. Clear intersections by stopping, looking, and creeping forward - siren audibility does not guarantee the cross traffic heard you.
Pursuits
Agency policy controls, not the seriousness of the original offense alone. Weigh the danger created against the need to apprehend, know your role as primary or secondary unit, and remember that North Carolina's enhanced penalty for fleeing (G.S. 20-141.5) is a charging decision, not a justification for risk.
Fitness
Physical readiness - cardiovascular capacity, strength, flexibility - supports decision-making under stress as much as it supports a foot pursuit. Sleep, hydration, and nutrition across shift work are part of the job standard.
Traps
Believing lights and siren create an absolute right-of-way, believing 20-145 covers a personal errand, or believing a felony automatically authorizes a pursuit.
Rule of thumb
Double the speed and you roughly quadruple the stopping distance.