This happens when there is a leaky valve in the truck hydraulics. Nothing happens when there is a full bin on the truck, but with an empty bin or no bin the leak is enough to lift the mechanism.

Poor maintenance, have the company/truck owner held responsible.

Vancouver feels your pain. https://www2.gov.bc.ca/gov/content/transportation/vehicle-safety-enforcement/information-education/bridge-strikes-data

https://www.blogto.com/city/2024/05/driver-lodged-truck-bridge-downtown-toronto/