An insulating rail boot encasing a rail embedded in concrete, asphalt or paver construction, including, shared right-of-way, dedicated right-of-way and at-grade crossing. The card-flipping device comprises a card-carrier unit for transporting the card in a vertical direction, a motor drive means for moving the unit in the vertical direction, and an actuator assembly including a rotatable cam arm for flipping the card over. The shift register circuit includes n register stages, and each register stage is connected to a start pulse input line or an output voltage line of a previous register stage, and is connected to three of four clock signal supply lines. The system may be deployed on existing TLPs or may be installed on new construction before while on land.