Abstract: According to my research nearly all the glare problems produced by on-coming cars can be solved by using an anti-glare glass as small as an adult's fist with approximately only 4% transmittance to visible light. It is suspended transversely on a transparent frame secured to the ceiling by a support brace, on which there is a universal joint at each end, just above the windshield in front of driver's seat. The anti-glare glass each time will slide down automatically about 10 cm on the suspension frame by rotating a DC motor when a photocell is activated by an on-coming glare and will retract up automatically by the above-mentioned motor when the glare is gone.