Verified so far
- Amsterdam ran a nighttime Droogbak trial to study heavy-vehicle loading on vulnerable bridges and quays.
- Calibration used four trucks and two tractors weighed wheel-by-wheel in the port before crossing measuring bars.
- Fibre imperfections act as sensing points whose reflected light changes with strain.
- PhotonFirst says the pilot derives vehicle and axle weight and records speed and direction without stopping vehicles.
Evidence limits
No enforcement use, legal admissibility, permanent deployment, accuracy percentage, plate reading or damage-prevention outcome is claimed.
Sources
- 1Gemeente AmsterdamProjects keeping Amsterdam moving (opens externally)
- 2Aan de grachtenThirty tonnes over three thin fibres (opens externally)
- 3