A transponder detector is provided with capabilities for detecting the presence and type of a transponder in its read range while operating at low power. To a signal line through the pixel circuit, is supplied a gray level designation current having a current value larger than that of the driving current during a selection period to store a luminance gray level in the pixel circuit. A top metal contact may be applied to a plurality of nanorods of the nanorod array. A path planning module or data processor determines the vehicular speed and trajectory for a path plan that avoids the obstacle consistent with the selected preferential velocities. Redundant position and timing information is used for uniquely determine the timing and position of two or more particles, even if they arrive at the same time at the detector. The single cross-member can be a suspension cross-member supporting at least first and second suspension members.