The lag times were due to "signal improvement work which was not completed by a contractor over the weekend," forcing the light-rail trams to slow down for the time being in the affected area, said Rob Schupp, a Metropolitan Transit System spokesman.
Workers were expected to complete the project Monday night.
Additionally, due to ongoing work to improve signaling systems for freight operations, there will be no trolley service between depots on E Street in Chula Vista and on Iris Avenue in Otay Mesa West beginning at 10 Monday night.
Buses -- an express providing nonstop service between the two stations and a shuttle linking stops on H Street, Palomar Street and Palm Avenue -- will be available for affected riders. Normal trolley service was due to resume for the first scheduled trips Tuesday morning.
Security personnel will be at impacted stations to help direct riders and answer questions, and the transit agency will make announcements on trains to help keep commuters informed about the service. MTS also will give regular updates via Twitter and on its website, sdmts.com, Schupp said.
@eesliter Hi Ernesto- We do not anticipate the delays to continue into tomorrow, we will update Twitter once issue resolved. Thanks!
— San Diego MTS (@sdmts) May 16, 2016
