A piezoelectric actuator is disclosed. Openings are formed in a photoresist layer for forming bumps, a positive liquid photoresist is provided into the openings of the photoresist layer for forming bumps. This system takes into account that the driver generally has two eyes and enables the driver to keep them both focused on the road ahead of the vehicle while enabling him or her to continuously identify the limits of the safe clearance path of the vehicle. A communication device may be configured to adapt and switch between different operational parameters used for interleaving andor deinterleaving at different times based on any desired considerations. A cartridge supports the level sensor and is received in the receiving region.