Rehabilitation of Western Australian coast line areas damaged by 4WD vehicles is expensive, labour intensive and time consuming (Kay and Alder, 1999). If degradation extends on either side of the track itself (Hosier and Eaton, 1980; Cole, 1993) then the total land area degraded by 4WD tracks in the Central Coast Region was 1550km2 in 1965 and 2500km? in 1998. This is a conservative estimate, since impacts may often extend several metres from the track (Kutiel et al., 1999)