Self-driving cars are already appearing on our roads. One of the main technological barrier holding them back from full use is the creation of effective sensor systems, and several companies are conducting specialist research in this area. Foresight Autonomous Holdings Ltd. (NASDAQ: FRSX) (TASE: FRSX) has created a unique system that combines infrared and visible light cameras in stereo technology that can detect obstacles under all weather and lighting conditions. Google’s parent company, Alphabet, Inc. (NASDAQ: GOOG), is developing driverless cars through its Waymo subsidiary, using a wide range of different sensors. The work of Tesla, Inc. (NASDAQ: TSLA) in this area is well-known and heavily reliant on a range of visible light cameras. Automotive safety specialist Autoliv, Inc. (NYSE: ALV) has created a range of separate detection systems using different technologies. Apple, Inc. (NASDAQ: AAPL), on the other hand, is focusing on the potential of a single complex lidar system. It’s a diversity of approaches that shows a technology approaching maturity.