To address the glare issues caused by highway ETC gantry monitoring and imaging illumination devices. this paper first investigates the mechanism of disability glare and derives the formula for the glare threshold increment. Subsequently. using the glare increment threshold as the evaluation metric and incorporating the current regulatory requirements for illumination devices. https://www.roneverhart.com/Turbosound-TS-18SW700-8A-18-Low-Frequency-Loudspeaker-p31480/