Would you want a trailer weighing 40,000 pounds or more with no brakes pushing a semi-truck toward you at every twist, turn, and intersection? You don’t have to answer that. I already know.

Have you ever wondered why semi-trucks use air brakes instead of hydraulic ones like most cars? The reason lies in the reliability, power, and fail-safe features offered by air brake systems.

Tesla has issued a recall for 35 of its new electric Semi trucks because the parking brake might not engage when applied by the driver. The danger, caused by a valve module that could leak air, is ...