Vagal Nerve Stimulation. Vagal nerve stimulation is a treatment used to reduce the frequency and intensity of seizures when medications aren't effective. The vagus nerve is one of many nerves that carry messages to and from the brain. It helps regulate internal organs such as the heart and stomach. Nerve fibers within the vagus nerve are connected to the part of the brain believed to be responsible for producing seizures.
A Class B CDL holder, on the other hand, is only allowed to drive a commercial motor vehicle towing a trailer that is less than 10,000 pounds. This means that a Class A CDL holder can drive all vehicles including Class B ones while a Class B CDL holder can drive all vehicles except Class A ones.
CDL Training Program Lengths. On average, a Class A CDL program lasts about seven weeks. This is based on full-time programs that run for five days per week. Class A programs tend to last longer than Class B programs, since a Class A license permits you to drive a greater variety of trucks and take on larger loads.