Alcohol Countermeasure Systems (International) Inc., commonly known as ACS, is an international group of companies with one common purpose: to promote road safety through industry-leading breath alcohol testing technology. ACS Corp designs and manufactures the breath-alcohol testing equipment that helps keep our roads safe, from personal breathalyzers to the ignition interlocks installed in vehicles. As a vertically integrated company, ACS employees are involved in every step of the process, from product conception to implementation and support in the field.