Work on Caltrain's Grade Crossing Improvement Program, which will enhance safety at 25 grade crossings in San Mateo County, will continue at Fair Oaks Lane and Watkins Avenue in Atherton and at Oak Grove Avenue in Menlo Park. The work will take place from Oct. 4-8, between 8 p.m. and 4 a.m. Throughout the project area, at least one lane of the impacted street will remain open. Flagmen will direct traffic and pedestrians around the construction.

Work continues on a $2.8-million project to add additional signals to the Caltrain signal system.

A $2.1-million project to improve the radio communications system that operates the signals and switches on the railroad tracks is underway. The project will add a second radio channel, which will increase the system's capacity. Work will take place Oct. 5-9 between the hours of 7:00 p.m. and 4 a.m. at several locations near the Diridon and Tamien stations in San Jose.

Oct. 4-8, crews will weld and grind the switches, and replace worn asphalt, rails, ties and ballast on the tracks between the South San Francisco and San Mateo stations.

Caltrain will repair the signals at the Broadway grade crossing in Burlingame from 11 a.m., Friday, Oct. 2 to 11 p.m., Saturday, Oct. 3. The repairs include removing and replacing an overhead signal structure damaged in an earlier accident. Although the westbound lane of Broadway will remain open, the eastbound lane will be closed during the construction. Eastbound traffic will be directed to use Oak Grove Avenue (south of the crossing) or Millbrae Avenue (north of the crossing). Flagmen will direct traffic and pedestrians around the construction.

On Oct. 4, crews will weld and grind the switches and replace worn asphalt, rails, ties and ballast on the tracks near the San Jose station.