What is the function of urea in heavy trucks?

[VonLevi]

Urea for heavy trucks is used in vehicles equipped with SCR (Selective Catalytic Reduction) systems, including cars, trucks, buses, and heavy-duty non-road diesel engine vehicles. It helps purify vehicle exhaust, reduce nitrogen oxide emissions, optimize engine performance and fuel consumption, and can decrease diesel consumption by up to 6%, significantly lowering costs. Below is some information about encountering heavy trucks while driving: 1. Avoiding truck blind spots: Trucks have large blind spots, especially on the right side. When driving, it's common to see trucks staying in the middle of the road, sometimes with slow vehicles blocking the fast lane, forcing drivers to overtake from the truck's right side. This situation is highly prone to traffic accidents. 2. Dangers of truck turns: When a truck turns, there is a specific term called 'inner wheel difference,' referring to the difference between the front and rear wheels on the turning side. If a car stays in this area, the truck driver cannot see anything there from inside the cab. It is crucial to move away quickly.