PURPOSE: To provide a sight-line guidance light easily determining the linearity of a road and improving a sight-line guidance effect particularly in the night, etc., and smoothly displaying the progressive direction, speed, etc., to a car, etc., passing on the road.

CONSTITUTION: A sight-line guidance light is composed of a light source 3 and an illuminant 2, in which light leakage sections 25 and light-shielding sections 24 in a proper length are formed repeatedly along the longitudinal direction on an outer circumferential surface and light projected from the light source 3 is emitted from the light leakage sections 25 and light-emitted in a broken-line shape. A plurality of the illuminants 2 are fitted horizontally in parallel vertically along a road while the exposure sections 25 of the lower illuminants 2 are displaced and arranged in one direction to the upper illuminants 2, and light from the light source 3 is projected selectively to these illuminants 2 in order towards the lower illuminants 2 from the upper illuminants 2.