Car 1: NORTH-Pautucketville- Tyngsborough line to Rt. 113
Car 2: NORTH-Centerville- Rt. 113 to Dracut line
Car 3: NORTH- Belvadere- Concord river to Tewksbury line
Car 4: EAST- Back Central-South Lowell
Car 5: EAST- Back Central-Middlesex street by Dunkins
Car 6: WEST-Acre- Middlesex street to Merrimak river
Car 7: WEST- Highlands- Upper Highlands
Car 8: EAST- Back Central- Downtown
Car 9: EAST- Back Central- Thorndke street Area
Car 10:WEST-Highlands- Lower Highlands
Car 11:NORTH-ALL- NORTH SECTOR ROVER
(old info from Internet page - unknown how old - maybe cira 2001)