Which type of vehicle has a lower maximum leakage rate?

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The maximum leakage rate refers to the allowable air loss in a vehicle's braking system. Single vehicles, such as standard trucks or buses, have a simpler braking system that typically includes fewer components compared to combination vehicles, which consist of a tractor and one or more trailers. This simplicity in design translates to a lower maximum leakage rate, as there are fewer connections and junctions in the brake system that could potentially lead to air leaks.

In contrast, combination vehicles have more intricate systems with multiple connections, making them more prone to having higher leakage rates. Heavy-duty and light-duty trucks can also vary significantly in their configurations and may not adhere to the same leakage standards as single vehicles due to their design and intended use.

Thus, a single vehicle’s braking system is designed for lower maximum leakage rates, emphasizing reliability and safety, which is crucial in managing braking performance and overall vehicle safety.

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