However, recent research in New Zealand appears to run counter to these initiatives. Officials at the Land Transport safety authority in Wellington discovered that hidden cameras were actually more effective than visible ones in reducing driving speeds on all roads. Although drivers were not able to see the cameras, warning signs indicated the start of the speeds camera zone, and it seems likely that motorists drove more cautiously overall because they did not know the exact location the cameras, on the other hand, had only a localised effect, by reducing actual accidents on the few metes of road covered by the cameras