Many of the drivers were initially concerned that the Drag Reduction System ( DRS ) would prove to be unsafe on the narrow streets of the principality .
Many of the drivers so lobbied to have the device banned for the duration of the weekend .
Many of the drivers were initially concerned that the Drag Reduction System ( DRS ) would prove to be unsafe on the narrow streets of the principality , and so lobbied to have the device banned for the duration of the weekend .