In the 1960s, driving habits in America were vastly different. Smoking while driving was common, seat belts were rarely used, and airbags had not yet been introduced. These practices contributed to high vehicle fatality rates. In response, Congress established the National Highway Traffic Safety Administration (NHTSA) in 1970 to address these issues. One of their early regulations aimed to reduce fire risks inside vehicles, particularly from cigarettes. However, this regulation has remained unchanged for over five decades, despite evidence suggesting it offers no significant fire safety benefits. Instead, it has led to the use of harmful flame-retardant chemicals that pose serious health risks.
Harmful Flame Retardants Persist in Modern Vehicles
During the golden era of motoring, driver behaviors and vehicle safety standards were markedly different. In those times, smoking behind the wheel was a routine habit, and safety measures like seat belts were seldom utilized. This combination led to alarming vehicle fatality statistics. To combat these dangers, NHTSA introduced Federal Motor Vehicle Safety Standard No. 302 in 1971, mandating that interior vehicle components should not ignite easily when exposed to small flames. Despite its intentions, this standard has not prevented any car fire fatalities and continues to be enforced today. More concerning is the reliance on cancer-causing flame-retardant chemicals to meet this outdated requirement.
A study by Duke University and the Green Science Policy Institute revealed that all 101 cars examined contained one or more forms of tris flame retardants, which are known carcinogens. These chemicals are found in vehicle seat foam, dashboard plastics, and other interior materials. Tris (1-chloro-isopropyl) phosphate (TCIPP), identified as a potential carcinogen, was detected in nearly all vehicles studied. Other hazardous compounds, such as TDCIPP and TCEP, also present significant health risks. Beyond cancer, these chemicals are linked to neurological and reproductive harm, affecting children disproportionately due to their developing brains and higher breathing rates.
Research indicates that exposure to these flame retardants can lead to IQ loss and increased cancer risk. For instance, epidemiological studies have shown that children in the U.S. have lost an average of three to five IQ points due to exposure to one flame retardant once used in cars. Moreover, individuals with higher levels of this chemical in their blood face a significantly elevated risk of cancer mortality. Vulnerable groups include children, automotive workers, rideshare drivers, and taxi drivers who spend considerable time in vehicles.
Contrary to its intended purpose, the flammability standard provides no proven fire safety benefit. Studies sponsored by NHTSA and others have shown that fires after crashes progress rapidly once they enter the passenger compartment, rendering flame retardants ineffective. Additionally, these chemicals can make fires smokier and more toxic, potentially endangering occupants and first responders. Given these findings, it is crucial for NHTSA to update this 53-year-old standard. Consumer Reports, along with other organizations, has petitioned for the removal of cancer-causing chemicals from vehicles.
California's experience with updating furniture flammability standards serves as a model. By revising a similar 1970s standard in 2013, they eliminated the need for flame retardants without compromising fire safety. This change has led to lower levels of harmful chemicals in homes. It is imperative that NHTSA follows suit and conducts research to find a better test, ensuring that vehicles are both fire-safe and healthy environments for all occupants.
From a journalist's perspective, this issue highlights the importance of regularly reviewing and updating safety standards. Outdated regulations can inadvertently cause more harm than good. The continued presence of these harmful chemicals in modern vehicles underscores the need for proactive policy changes. NHTSA must prioritize public health and safety by addressing this long-standing problem without delay.