4. the third rail in the area, the approval must have been off the ground. By using the SCD, which are considered part of the third rail between both sets of SCD the only safe from electrical powered.
4. The three tracks in the area have been closed to the grounding. The SCD and SCD is considered the third rail between the two series is powered only from electricity.
4. Third rail in the area approved block has been grounded. Using SCD and considered part of the third rail between SCD both 2 set only, safe from the electricity powered