Nowadays, the traffic light warning has been used since yesterday, 6.00 pm. However; it is only used by electric power and only location , in front of guardhouse 1 near crosswalk.
If it is used at middle of the road, the wire will be plumped by vehicle, HR will discuss with MT to request the old battery to use with traffic light warning. Lastly, if there is not the old battery, location at guardhouse 1 near crossroad is enough to give the right and it is not risk for vehicle to crash the traffic light warning in case that it is put at the middle of the road.