Unattended Bag at a Crowded Platform
At 5:47 p.m. on a Thursday, a station agent reports an unattended black backpack at the top of the only working escalator at a busy light-rail station. The station has two platforms, a single elevator currently out of service for scheduled maintenance, and an estimated 1,100 passengers on the platforms because a concert lets out at 9:30 p.m. and trains are running every 4 minutes. The next train is 90 seconds away. Police are 7 minutes out. The agent has not touched the bag and has no explosive-detection capability. The station has one emergency gate at the north end and a stairwell at the south end. Ridership is heavy but orderly; several passengers are filming. The operations control center asks you, the duty supervisor, for a decision: hold trains outside the station, evacuate, or continue normal service while police respond.
1. The operations control center wants a decision in the next 60 seconds. What do you order, and what is the reasoning behind each element?
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Decision: hold trains and evacuate the platform, not continue service.
- Hold trains outside the station. A train arriving in 90 seconds would discharge roughly 1,100 more people into the hazard and block the north emergency gate. Holding also keeps the train away from a possible blast zone.
- Do not touch, cover, or move the bag. Minimize radio and cell use immediately next to it as local bomb-squad guidance advises; the station agent should withdraw to the agreed rendezvous point and keep passengers back.
- Evacuate to a distance, not just off the platform. Use the north emergency gate and south stairwell; stop the escalator and direct passengers to stairs. Because the elevator is out, assign two staff to assist mobility-impaired riders and identify a safe refuge area.
- Request police and EOD and set perimeters. Police are 7 minutes out; establish an inner perimeter and an outer crowd-control line, and ask OCC for transit police and bus-bridge standby.
The reasoning is a life-safety hierarchy: an unverified device in a crowded, partially accessible station creates a credible mass-casualty risk, while a controlled evacuation and short service delay are recoverable. Continuing normal service is not defensible because it adds passengers and prevents egress. The decision should be made by the duty supervisor under the emergency plan, not deferred to the arriving train.
2. How do you sequence communication and service restoration, and what would you document afterward?
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Communication and restoration.
- Initial message: use a calm, scripted PA: 'For your safety, please leave the station now through the north gate or south stairs. Trains are holding. Follow staff directions.' Do not speculate about a bomb. Repeat every 60 to 90 seconds. Post the same message to the service-alert system and social media; note the elevator outage and accessible exit.
- Staff roles: one employee at each entrance to turn riders away, one at the north gate, one at the south stair, and one with the agent to meet police. Record who is where.
- Restoration is police-led. Do not resume until the incident commander declares the station clear, the bag is rendered safe or removed, and the station has been inspected. Then restore in phases: reopen gates, run one empty train through, check platform crowding, and resume normal headways. Keep the elevator out-of-service notice current.
- Document: time of report, exact words of the report, decisions and who approved them, evacuation start and end, police incident number, staff assigned, injuries, and service impacts. Hold a hot debrief within 24 hours and a formal after-action review within 10 days. The documentation is what makes the judgement defensible and feeds the emergency plan, especially the single-elevator gap.