Replacing all existing trade plates would prove expensive. Gradual introduction, through replacement plates, would be much cheaper but it would take many years before all old plates were out of circulation. An alternative might be to replace only the front plate initially. This would provide flexibility to re-design the trade licence and solve difficulties surrounding the triangular holder. Eventually, rear plates would also be replaced.
Motorcycles have a single plate.
In the event that charges have to be revised, a full Regulatory Impact Assessment would be prepared.