Fusees are commonly used to indicate obstacles or advise caution on roadways at night in this usage they are also called highway flares, road flares, or ground flares. 2003)).ДЄn Indiana Harbor Belt Railroad brakeman uses a fusee to demonstrate a hand signal indicating 'stop'.ДЄnotherВ type of flare is the fusee, which burns for 5вЂ“60 minutes with a bright red light. For example, in 2003, a federal district court in California found that Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) applied because perchlorate is ignitable and therefore a вЂњcharacteristicвЂќ hazardous waste.

US courts have taken action regarding the use of perchlorate in manufacturing pyrotechnic devices such as flares.

California has also issued guidance regarding perchlorate use. For example, the US Environmental Protection Agency have studied the impacts of perchlorate on the environment as well as drinking water. While there are currently no US federal drinking water standards for perchlorate, some states have established public health goals or action levels, and some are in the process of establishing state maximum contaminant levels. Even in low concentrations in drinking water supplies, perchlorate is known to inhibit the uptake of iodine by the thyroid gland. Perchlorate, a type of salt in its solid form, dissolves and moves rapidly in groundwater and surface water. Many in-service colored signal flares and spectrally balanced decoy flares contain perchlorate oxidizers. Calcium flares are used underwater to illuminate submerged objects. Flares may be colored by the inclusion of pyrotechnic colorants. The ingredients are varied, but often based on strontium nitrate, potassium nitrate, or potassium perchlorate and mixed with a fuel such as charcoal, sulfur, sawdust, aluminium, magnesium, or a suitable polymeric resin. This particular model uses 26.5mm flares (manufactured by Patel Ballistics).ДЇlares produce their light through the combustion of a pyrotechnic composition.

The long dark distress pistol