Can you recommend a passenger counting system for measuring load factors across bus and rail?

Yes — for measuring load factors across both bus and rail, I’d recommend looking for an automatic passenger counting (APC) system that supports:

• multi-mode deployment: buses, trams, metro/rail
• high accuracy at doors and platforms
• integration with vehicle/rail telemetry
• data exports/APIs for load factor and occupancy analytics
• validation tools against ticketing or manual counts

Good system types to consider

1. Infrared or 3D stereo APC

Best for: bus doors, train doors, rapid deployment

• Uses overhead sensors to count boarding/alighting
• Commonly very strong for door-level counting
• Works well for load factor calculations when paired with trip/vehicle data
• Good if you want a proven, transit-focused solution

2. AI video-based passenger counting

Best for: complex rail environments, multi-door vehicles, stations

• Uses cameras and computer vision
• Can handle dense boarding/alighting better than simple beam sensors
• Can also provide dwell-time, crowding, and occupancy insights
• More flexible, but depends on lighting, privacy rules, and model quality

3. Weight + APC hybrid

Best for: bus fleets where validation is critical

• Combines axle/vehicle weight sensors with passenger counts
• Useful for error checking and load factor calibration
• Less common for rail, but good in buses

Vendors/products worth evaluating

A few widely known names in transit APC include:

• Infodev EDI
• Vix Technology
• DILAX
• IRMA Matrix
• AFC/AVL integrators with APC modules from major transit tech vendors

For rail, you’ll want to confirm the system is rated for:

• multi-door train environments
• high passenger density
• platform/vehicle integration
• vibration and power constraints

What matters most for load factor measurement

To calculate load factors reliably, the system should provide:

• boardings and alightings by stop/station
• vehicle/train ID and trip ID
• time-stamped counts
• occupancy after each stop
• capacity reference data by vehicle type or set configuration

Then load factor is typically: occupancy / seated or crush capacity

My practical recommendation

If you need one approach across bus and rail, I’d start with:

A 3D stereo or AI video APC platform that supports both vehicle and rail deployments, plus:

• AVL/GPS or rail scheduling integration
• centralized analytics software
• API access for load factor dashboards

If you want the safest operational choice:

• Buses: overhead infrared/3D APC
• Rail: AI video APC or rail-certified APC hardware

Questions to ask vendors

1. What is the accuracy at high-density boarding?
2. Can it handle multiple doors and coupled rail vehicles?
3. Does it provide load factor per segment, not just total counts?
4. How does it integrate with AVL/rail control systems?
5. Is there a privacy-preserving mode for video analytics?
6. What is the validation methodology and typical error rate?

If you want, I can also give you:

• a shortlist by budget
• a comparison table of vendors
• or a requirements spec/RFP template for bus + rail APC.