Red Line 3 : Red line is a hose that is usually one inch in diameter and rubber jacketed. This type of hose is used on small fires using the water carried in an apparatus' booster tank and are usually stored on reels. Same as booster line
The City of Sand Springs, Fire Department, Fire Glossary, Sand Springs, Oklahoma, USA 2007. http://www.sandspringsok.org/ArchiveCenter/ViewFil e/Item/51, (FrDept - Amer) {475}