|A Green Line train at Fleming Park Station.|
|Area served||Jundah, Stuart, Arlington Arbor|
|Transit type||Rapid transit|
|Number of stations||94|
|Daily ridership||656,171 (2016)|
|Annual ridership||239,545,925 (2016)|
|Began operation||January 16, 1968|
|Character||Elevated, at-grade, and underground|
|Train length||5 cars|
|System length||59 mi|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in)|
|Electrification||625 V (DC) third rail|
|Average speed||38 km/h (24 mph)|
|Top speed||83 km/h (52 mph)|
The system opened in 1968 with the Red Line from Sedgwick to Harborside and the Green Line from Lamott to Stuart Central. In 1974, the Red and Green Lines were extended west to Prospect Beach and Merita Terminal, respectively.
In response to the construction of the Medical Center and new developments surrounding the decommissioned Mayfield Airport in East Jundah, the Blue Line was opened to Medical Center in 1979 and extended to Del Mar Station in Scripps Beach in 1981. In 1992, the Red Line was extended from Harborside to Scripps Beach, providing a quicker service to East Jundah than the existing Blue Line, which had many stops and fewer downtown connections. The extension was built alongside existing commuter rail lines.
In Stuart, the Green Line was extended east to Arlington Center in 2001 and Airport Village in 2005, providing subway access to Jundah-Stuart Intercontinental Airport.
The Jundah Subway system has three lines. In the following table, peak times are defined as 7–10 AM and 4–7 PM on weekdays.
|Red||Prospect Beach ↔ Del Mar||6 AM – 2 AM||14 mi||25||4 min||8 min|
|Blue||Rutherford ↔ Scripps Beach||6 AM – 2 AM||15 mi||26||4 min||8 min|
|Green||Merita Terminal ↔ Airport Village||5:30 AM – 2 AM||23 mi||34||5 min||9 min|
|Green (Express)*||Merita Terminal ↔ Stuart Central||7–10 AM, 4–7 PM||9 mi||19||5 min||N/A|
*Express trains operate in peak direction only.
Parts of the Red and Green lines operate 24 hours a day, 7 days a week. The following table shows late night services:
|Red||Sedgwick ↔ Harborside||2 AM – 6 AM||4 mi||8||30 min|
|Green||Upper Montrose ↔ Stuart Central||2 AM – 6 AM||6 mi||13||30 min|
A single ride ticket is $2.75 THD regardless of origin and destination. The fare is $2.50 THD per ride using a refillable J-Card. A free bus transfer is available within 75 minutes of swiping a card. Students and seniors are eligible for reduced fare J-Cards, which allow travel for only $1.50 THD per ride.