An industrial vehicle comprising: an operator compartment comprising a floor configured for an operator to stand on, the floor having a front side , a left side extending from the front side , a right side extending from the front side and opposite the left side , and a rear side opposite the front side and extending between the left side and the right side ; and an operator presence detector , the operator presence detector comprising: a first detector located (a) proximate one side of the floor and (b) a distance above the floor , wherein a first detection field associated with the first detector extends between the one side of the floor and the side opposite the one side of the floor ; and a second detector located (a) proximate either (i) the one side of the floor or (ii) proximate the side opposite the one side of the floor and (b) a distance above the floor , wherein a second detection field associated with the second detector extends between the one side of the floor and the side opposite the one side of the floor ; characterized in that the first detector and the second detector are configured and positioned such that an operator who has both a left lower extremity and a right lower extremity located in the operator compartment cannot cause both the first detector and the second detector to detect an object with a single lower extremity. an operator compartment comprising a floor configured for an operator to stand on, the floor having a front side , a left side extending from the front side , a right side extending from the front side and opposite the left side , and a rear side opposite the front side and extending between the left side and the right side ; and an operator presence detector , the operator presence detector comprising: a first detector located (a) proximate one side of the floor and (b) a distance above the floor , wherein a first detection field associated with the first detector extends between the one side of the floor and the side opposite the one side of the floor ; and a second detector located (a) proximate either (i) the one side of the floor or (ii) proximate the side opposite the one side of the floor and (b) a distance above the floor , wherein a second detection field associated with the second detector extends between the one side of the floor and the side opposite the one side of the floor ; characterized in that the first detector and the second detector are configured and positioned such that an operator who has both a left lower extremity and a right lower extremity located in the operator compartment cannot cause both the first detector and the second detector to detect an object with a single lower extremity. a first detector located (a) proximate one side of the floor and (b) a distance above the floor , wherein a first detection field associated with the first detector extends between the one side of the floor and the side opposite the one side of the floor ; and a second detector located (a) proximate either (i) the one side of the floor or (ii) proximate the side opposite the one side of the floor and (b) a distance above the floor , wherein a second detection field associated with the second detector extends between the one side of the floor and the side opposite the one side of the floor ; characterized in that the first detector and the second detector are configured and positioned such that an operator who has both a left lower extremity and a right lower extremity located in the operator compartment cannot cause both the first detector and the second detector to detect an object with a single lower extremity. <EOS>