piscaalerta

Pisca alerta, also known as hazard warning lights, are a set of vehicle lights designed to flash in unison to warn other road users about a potential danger or an immobilized vehicle. The term comes from the Portuguese words piscar (to blink) and alerta (warning). On most cars the hazard lights use the same bulbs as the turn signals and are controlled by a dedicated switch, usually marked with a triangle symbol. When activated, all four indicator lamps flash together, regardless of steering input.

Usage and purpose: They are intended to warn others when the vehicle is stopped due to a breakdown, accident, or obstruction, or when driving in unusual road conditions where extra visibility is needed. They can be used when the vehicle is stationary on the shoulder or in a traffic jam to mark position. They should not be used as a substitute for turn signals when changing lanes or making a deliberate turn. In many jurisdictions using hazard lights while driving is restricted or discouraged because it can confuse other drivers.

Color and configuration: In most passenger vehicles, hazard lamps flash using the same color as the standard turn signals, with the specific color varying by market (commonly amber or red). The flash pattern is typically fixed by the vehicle’s electrical system. Some modern vehicles use LED arrays but retain the same functional purpose and behavior. Legal requirements regarding usage and activation can vary by country or region.