Unlike most of the other railway lines in the city, the Broker Line is completely overground. Between Hove Beach station and Schottler station a second line branches off from the eastern line towards a rail yard. Between Huntington Street station and Francis International Airport station there is a small branch line which leaves the main line at a T-Junction. This branch line terminates at Dukes Boulevard Station, though no trains serve the line as Dukes Boulevard Station is closed for "works maintenance".
- Route 8 trains run clockwise in Broker, counter-clockwise in Dukes
- Route 3 trains run counter-clockwise in Broker, clockwise in Dukes
- Immediately after departing Hove Beach, Route 8 services change to Route A for the Algonquin Outer Line with a corresponding announcement of "This is the A train, the next stop is Easton station."
- Like the counterparts of the J/3 lines, Manganese East is the first stop where Northbound J trains for the Algonquin Outer Line are referred to. As a north-by-westbound Route 3 service prepares to depart Huntington Street Lower Level Station, an announcement will be made saying "This is the J train, the next stop is Manganese East station," followed by the stantard door chime and departure.
Listed as per Route 3:
- From Easton on Route J (interchange with Algonquin Inner Line)
- Hove Beach
- Huntington Street (Upper) (crossover)
- Francis International Airport
- Lynch Street
- Huntington Street (Lower) (crossover)
- Becomes Route J to Manganese East