ATV Recreational Vehicle Accidents in California: what a consumer should be aware of in these types of cases. Attorney Mark Blane explains the different scenarios he finds folks injuriing themselves in these types of cases. From what the manufacturers of ATV (four wheeler) vehicles recommends in terms of speed, and number of persons that should be on one, to what folks need to be aware of if they take their ATV vehicles off roading in San Diego County. In fact, people should be cautious of going ATV riding by themselves particularly if they find themselves in remote mountain trails, or East County (including Imperial County) ATV vehicle trails.