Traffic Light Signals

Light Signalling

Traffic can also be regulated by means of light signals. The light signalling intended to regulate the traffic of vehicles consists of a system of three circular, non-flashing lights, with the colours red, yellow, and green.
Failure to comply with the obligation to stop imposed by the red traffic regulation light constitutes a very serious administrative offence, which can be punished with an additional sanction of disqualification from driving, and may also constitute a crime.

	S1 - Circular Tricolor Signal It regulates the traffic of vehicles with three non-flashing circular lights: red, yellow, and green. Red: Stop before entering the regulated area. Yellow: Prepare to stop unless already close to the area. Green: Authorized to proceed unless the area is congested.
	S2 - Directional Tricolor Signal Indicates traffic directions with arrows, with vertical arrows representing permission or prohibition to go straight.
	S3 - Tricolor Signal for Bicycles Dedicated tricolor light signal for bicycle lanes.
	S4 - Supplementary Green Light Additional green arrow light allows vehicles to proceed in the specified direction, independent of the main lights.
	S5 - Flashing Yellow Light A flashing yellow light authorizes vehicles to pass with caution.
	S6 - Flashing Yellow Light with Arrow A flashing yellow light with an arrow indicates caution and direction of passage.
	S7 - Alternating Flashing Yellow Lights Two alternating yellow lights indicate the driver can pass with caution.
	S8 - Flashing red signal A signal consisting of a flashing red circular light or alternating red lights., indicating that the driver must stop.
	S9 - Signal for Level Crossings Flashing red lights at level crossings indicate an obligation to stop; a flashing white light allows passage.
	S10 - Signal for Level Crossings with Yellow Red and yellow lights at level crossings authorize passage with special caution depending on the color.
	S11 - Pedestrian Warning Signal Flashing yellow light with a pedestrian silhouette alerts drivers to a pedestrian crossing ahead.
	S12 - Red Affect Light Two red inclined bars on a black background prohibit driving in the affected lane.
	S13 - Yellow Affect Light A 45º yellow arrow on a black background obligates drivers to switch to the lane indicated by the arrow.
	S14 - Green Affect Light A green arrow pointing downward authorizes vehicles to use the lane to which it applies.
	S15 - Flashing Yellow Affect Light A flashing yellow arrow, circular or square, allows passage with special caution.
	S16 - Public Transport Signal White lights with shapes for public transport: horizontal bar (prohibited), vertical bar (authorized).
	S17 - BUS Signal A green "BUS" sign on a black background authorizes public transport vehicles to proceed.
	S18 - Two-Color Pedestrian Signal Red light prohibits crossing; green light permits crossing for pedestrians.