Should Truck Brake Lights Pulse? FMCSA Asks for Your Opinion

You might care about this because the Federal Motor Carrier Safety Administration (FMCSA) is asking for public comments. They are considering a request from Intellistop, Inc. This company wants a special permission, called an exemption. This exemption would let large trucks, known as commercial motor vehicles, use a special lamp system. This system is called the Intellistop module. The module changes how the rear lights work when the driver steps on the brakes. Normally, truck brake lights stay on steadily. But with the Intellistop module, the rear clearance, identification, and brake lights would pulse. They would go from a dimmer setting to a brighter setting four times. This happens over two seconds right after the brakes are first pressed. After these pulses, the lights would then return to a steady bright state as long as the brakes are still on. Current rules say that outside lights on commercial vehicles must burn steadily. This includes brake lights. These rules are part of the Federal Motor Carrier Safety Regulations. They also refer to another standard, Federal Motor Vehicle Safety Standard No. 108, which also says brake lights must be steady. Intellistop says its system is safe. They claim it would not reduce safety on the roads. They designed the module to fail safely. If it stops working, the lights go back to their normal, steady function. They also say their system keeps the same signal color, location, and activation. This means drivers behind the truck would still understand the brake signal. They argue it just makes the braking signal more visible. This could help prevent accidents. The company also points out that FMCSA has allowed other companies to use this module. Several motor carriers have already received similar exemptions for the Intellistop system. FMCSA has also given exemptions for other types of pulsating auxiliary brake lights in the past. The FMCSA has the power to grant such exemptions. But they must first ask for public opinions. They need to ensure that granting the exemption would keep safety levels the same or even better. They will review all comments and safety analyses. Then they will decide whether to approve or deny the request. This request is interesting because it deals with a small but potentially very important change to vehicle safety standards. Truck brake lights have traditionally been steady. This is a very clear and consistent signal for drivers behind them. Intellistop is proposing a modification that makes the brake lights flash brightly several times before becoming steady. This could be a new way to grab the attention of other drivers. The Federal Motor Carrier Safety Administration denied Intellistop's previous application in 2022. This time, Intellistop has resubmitted its request. They have specifically addressed the reasons for the earlier denial. This shows a careful refinement of their proposal. It suggests they are trying to meet the agency's safety concerns. The agency is treating this new submission as a renewed request, not a re-examination of the old one. The core of the discussion is whether a pulsating brake light is safer than a steady one. Intellistop argues that its system makes the brake signal more noticeable. This could potentially reduce rear-end collisions. Other exemptions have been granted for similar technologies. This suggests a willingness by FMCSA to consider new safety technologies. However, the requirement for steady burning lights is a long-standing standard. Changing it, even with an exemption, could set an example for how vehicle lighting is regulated. It also shows a legal interpretation where an applicant can resubmit with more information after a denial. This process allows for new evidence or improved designs to be considered. This legal document would be especially interesting to several groups. First, motor carriers and trucking companies will want to pay close attention. If this exemption is granted, it means they could choose to equip their commercial vehicles with this new lighting technology. This could potentially improve safety for their fleets and drivers. Vehicle manufacturers and suppliers of automotive parts will also find this relevant. They might see a new market for advanced safety lighting systems. Safety advocates and organizations focused on road safety would also be very interested. They might want to comment on the potential benefits or drawbacks of pulsating brake lights. Their input could influence the FMCSA's final decision. Drivers of all types of vehicles, both commercial and private, are stakeholders. Anything that makes large trucks more visible on the road affects everyone's safety. Legal professionals specializing in transportation law or regulatory compliance would find this notice important. It demonstrates how federal agencies consider exemptions from established safety rules. It also shows the process for resubmitting denied applications. Researchers in transportation safety or human factors could also find value in this. They might study how different lighting patterns affect driver reaction times and accident rates. Finally, any member of the public who uses roads shared with commercial trucks should care. Better visibility for trucks could make roads safer for everyone. The process outlined by the FMCSA allows anyone to voice their opinion on changes to safety regulations.