The meaning of the Acronym RRL is...

RRL is

• Rudder Reference Line

More Meanings For RRL:

• Rhizobium Research Laboratory
• Road Research Laboratory
• Rhizobium Research Laboratory
• Road Research Laboratory
• Rudder Reference Line
• Runway Remaining Lights
• Road Research Laboratory
• Recommended Reading Library
• Rock & Roll Library

RRL is also in:

• Educational
• Meteorology
• Military
• Museums
• NASA
• Transportation
• Universities