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.
The Difference Between a LVN and LPN. The primary difference between a LVN and LPN is a variation in job title based on the state in which you work. Both of these are entry-level nursing careers.If you work in Texas or California, your job title is LVN.All other states refer to the same occupation as a LPN.he primary difference between a LVN and LPN is a variation in job title based on the state in which you work. Both of these are entry-level nursing careers.