I looked up acronyms for PU, the only one I could find relating to smell would be pig urine. But all of the other info about it I found said that it doesn't actually stand for specific words starting with the letters P and U. Here is the best answer I found from the website- The Phrase Finder:
National Transport Authority > Taxi and Bus Licensing > Taxi > SPSV Driver Licensing > Renew an SPSV Driver Licence. A regular SPSV driver licence is valid for five years and is renewable; a local area hackney driver licence is valid for three years and cannot be renewed. (The holder of a local area hackney driver licence who wishes to continue operating can, however, apply for a new licence.) To renew your SPSV driver licence, you must hold: 1  A valid full Irish driving licence or equivalent; 2  A valid SPSV driver licence; 3  Must be Tax Cleared with Revenue.
License renewal periods have changed to 6 years for most drivers. Some drivers are being randomly selected to receive a less-than-six-year driver license in order to make the transition as smooth as possible.Your renewal notice will say what your next renewal period will be, and you will only pay for the number of years your license is valid.Your license fee will remain at $9 per year. If you have any endorsements, such as a motorcycle or CDL, youâll pay an additional year for them too.enew using your License eXpress account. Securely renew and update your driver license or ID card, vehicles, motorcycles, trailers, boats and their addresses all in one place! To learn more, see What is License eXpress.