An application from a company specializing in pulsating brake lights for trucks has been denied by federal regulators despite strong support from the trucking industry.
Fayetteville, Arkansas-based Intellistop Inc., which makes a device that prompts preexisting brake lights to pulse briefly for added safety when brakes are engaged (see video, below), had sought an industrywide exemption from federal regulations that require all commercial vehicles be equipped with steady-burning brake lamps.
Intel...
https://www.freightwaves.com/news/truck-brake-light-exemption-denied-despite-industry-support