Any of these uses shall be provided with an entrance on a street or road which shall have a pavement width of not less than twenty (20') feet, with ingress and egress so designed as to minimize traffic congestion, and a minimum six (6') foot high fence or evergreen or evergreen-type hedge or shrubs at intervals of not more than six (6') feet, or a minimum of ten (10') feet of permanently maintained planting strip on all property lines abutting any R District or residential street.