Error mitigation techniques are provided for video coding system in which input frames are selected for coding either as a Random Access Pictures or as a non-RAP frame. The dart barrel has a head portion and a shaft channel coaxially extending at the head portion, and defining a head opening at the head portion to communicate with the shaft channel. The base remains substantially fixed relative to synchronized adjustment of the seat and the back rest, and the back-rest frame includes a pivot on which the back rest rotates to adjust a back-rest recline position. The first support or plurality of first supports each further include a first attachment mechanism, with each first attachment mechanism adapted to attach to a mounting bar disposed between a radiator and a front bumper of the truck type. The second wiring line is formed by patterning techniques so that its both edges are placed outside of a pattern of the TMR element.