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.
Aspiring LPNs need to complete a diploma or certificate program in practical nursing, while aspiring RNs need an associate's or bachelor's degree in nursing. Although nursing courses can vary, most schools focus on the same core subject areas. In addition, a supervised clinical experience and hands-on practice during courses are common across all programs for aspiring LPNs and RNs. Both LPNs and RNs have to get state licensure to work in the nursing field.