Typical pole spacing in bends will be , and for straight sections of track, maximum spacing is between poles. A total of ten electrical stations are planned: two traction power substations, one switching station, and seven paralleling stations. Each traction power substation (TPS) is anticipated to have a footprint of and would contain two 60 MVA transformers to step down supply power (at 115 kV AC) to the 2×25 kV AC required for the messenger/contact and feeder lines. The switching station (SWS) will be located near the Redwood Junction, approximately halfway between the two traction power substations. The SWS will include a phase break to electrically isolate the power supplied from each TPS and two 10 MVA autotransformers, in a footprint of . The paralleling stations (PS) each maintain system voltage with one or two 10 MVA autotransformers and have a footprint of . PS3 in Burlingame was originally approved via the FEIR for a location near the intersection of California and Lincoln; however, this would interfere with plans to grade separate the crossing at Broadway, so PS3 was moved west of the tracks to a location near Mills and California. Based on resident objections to the new site, however, the City of Burlingame offered an alternative site east of the tracks at 1369 North Carolan adjacent to the city-owned Corporation Yard. The PCJPB-owned right-of-way has been divided into four construction segments. From the north, the segments are arranged as:  Segments are further divided into work areas, indicated by brackets in the list above. Work is scheduled to begin in Segments 2 and 4 and proceed from north to south within each segment before moving on to Segments 1 and 3. The first work area will be in the cities of South San Francisco and San Bruno. Within each work area, the first two months of activity will involve tree pruning and removal, followed by three to five months of construction of the foundations for the overhead contact system poles. Once the foundations are complete, construction of the electrical station(s) (if present) and pole and wire installation will work in parallel and take about a year. Schedules have been announced for Segment 2, Work Areas 5 (South City/San Bruno), 4 (Millbrae/Burlingame), 3 (San Mateo), 2 (Belmont/San Carlos), and 1 (Redwood City/Atherton). Segment/Work Area 4 (San Jose/Santa Clara) spans from Tamien to just north of the Santa Clara station, where the tracks diverge from the Union Pacific tracks near the overpass of De la Cruz Boulevard, and wire installation is scheduled to complete in late 2018.