Copper Line (San Diego Trolley)

Copper Line
Copper Line trolley at Santee on the first day of service
Overview
Other name(s)Copper Line–East County Connector
OwnerSan Diego Metropolitan Transit System
LocaleSan Diego, California
Termini
Stations4
Websitesdmts.com/inside-mts/current-projects/copper-line-east-county-connector
Service
TypeLight rail
SystemSan Diego Trolley
Route number535
Operator(s)San Diego Trolley, Inc.
Rolling stockSingle-car trains
History
OpenedSeptember 29, 2024
Technical
Line length3.8 mi (6.1 km)
Number of tracks2 (El Cajon–Gillespie Field)
1 (Gillespie Field–Santee)
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
ElectrificationOverhead line, 600 V DC
Operating speed55 mph (89 km/h) (max)
Route map
Copper Line highlighted in copper
Santee
Gillespie Field
Arnele Avenue
El Cajon

Multiple
services
All stations
are accessible

The Copper Line, officially the Copper Line–East County Connector, is a light rail line in the San Diego Trolley system, operated by San Diego Trolley, Inc. an operating division of the San Diego Metropolitan Transit System (MTS). Located in East County, San Diego, it operates as a shuttle between El Cajon Transit Center and Santee station. It opened on September 29, 2024, making it the system's newest line.

The line is one of five lines in the trolley system, the others being the Blue, Orange, Green, and Silver (operates on select holidays only) lines. MTS created the Copper Line because the section of the line between Gillespie Field station and Santee has a single track, which has been the source of delays that impact both the Green and Orange lines. The Copper Line aims to alleviate these issues by creating a dedicated shuttle service disconnected from the larger Green and Orange lines.