What is the speed limit for crossing a narrow bridge?

[Erin]

When crossing a narrow bridge, the speed of a vehicle should not exceed 30 km/h. Below are specific details regarding speed limits for motor vehicles: 1. Standards: The formulation of speed limit standards is not solely based on the number of lanes. It is determined by evaluating factors such as road classification, traffic volume, road width, and the presence of median barriers. For instance, the speed limit for a Class I highway can be set between 60-100 km/h depending on specific conditions, while a Class II highway can be set between 40-80 km/h. Therefore, setting a speed limit of 60 km/h is policy-based. 2. Speed Limitation: For safety considerations, the maximum speed of cars is often restricted. For example, high-end sedans and sports cars from German manufacturers like Mercedes-Benz, BMW, and Audi have their top speed limited to 250 km/h. If these restrictions were lifted, there would still be some potential for higher speeds, meaning the maximum speed does not fully reflect the vehicle's power performance. This potential is also evident in the vehicle's mid-range acceleration capability.