But the tire speed rating system isnât without its quirks. For instance, the systemâs European roots give it unusual mile per hour maximums. Another such quirk is that the letter âHâ is out of place. Instead of appearing after âG,â it falls between âUâ and âVâ as does the speed to which it corresponds.
Among them: 1  RNs tend to have more responsibilities and independence in the workplace than LPNs. 2  RNs must usually complete more training than LPNs. 3  LPNs are in higher demand than RNs, nationally speaking.  RNs tend to earn more than LPNs.
What is the Difference Between RN and LPN. In the hierarchy of the Nursing staff you may think that a nurse is just a nurse but there are a few things that you may need to know if you are considering a degree as a Registered Nurse or a Licensed Practical Nurse. Registered Nurse. A Registered Nurse or R.N. is at the top of the nursing staff.