TRL
TRL is an abbreviation for:
- Technology Readiness Level , a scale for evaluating the level of development of new technologies
- Temporary Residence Limited , American music label
- Total Request Live , chart broadcast by MTV
- Transition level , see transition height
- Transport Research Laboratory
- Turkish lira (until currency conversion in 2005, since then TRY)
TrL stands for:
- Tram Luzern, predecessor company of Verkehrsbetriebe Luzern
