Tripping on pavement.

At the properties of numbers 48 and 18 Pavilion Road, Worthing, BN 14 7EQ the front gardens have been covered over with gravel/stones so that the owners can park their cars there. Every time the cars are moved gravel gets transferred onto the pavement, this makes walking on the pavement difficult if one has limited mobility. Also. the gravel/stones get transferred into the road, passing cars will then transfer stones onto other vehicles causing chipping to the bodywork, or even damaging a following vehicles windscreen. The gravel needs to be swept up regularly by the residents of these properties.