Crosswalk floodlight optical system.|@|~(^,^)~|@|Symmetric floodlight: (a) Change of intensity distribution by tilting, (b) illuminance effect to driver.|@|~(^,^)~|@|Asymmetric floodlight: (a) Intensity distribution, (b) illuminance effect to driver.|@|~(^,^)~|@|Image of existing floodlight.|@|~(^,^)~|@|Standard of crosswalk and traffic light.|@|~(^,^)~|@|Single floodlight optical system layout: (a) y-z plane, (b) isometric view.|@|~(^,^)~|@|Intensity slice chart.|@|~(^,^)~|@|Change of illuminance distribution.|@|~(^,^)~|@|Layout of luminance simulation.|@|~(^,^)~|@|Results of luminance simulation: (a) Distance of 3 m, (b) distance of 9 m.|@|~(^,^)~|@|Graph of luminance simulation.

2024;35:323~329 https://doi.org/10.3807/KJOP.2024.35.6.323