The Road Traffic (Signs) Amendment Regulations 2012 specify that a zebra pedestrian crossing be marked at either end by beacons emitting flashes of yellow light at regular intervals.
The purpose of these flashing beacons is to give motorists advance warning that they are approaching a pedestrian crossing, particularly at night or in poor weather, improving safety for those using the crossings.
My Department is currently reviewing the use of unilluminated zebra crossings in other jurisdictions and I will consider that work in the near future.