What is the main technical and safety reason why the front part of a vehicle should not be modified?

Question

DentroTest · Accepted Answer

The correct answer is based on the principles of passive safety. Manufacturers design the front of vehicles (hood, bumper, grille) with deformable materials and rounded shapes to minimize damage in the event of hitting pedestrians or cyclists. If this area is modified (for example, by installing non-approved rigid bull bars, sharp spoilers, or changing the structure), this impact absorption capability is nullified, drastically increasing the likelihood of causing serious or fatal injuries to vulnerable road users. Although regulations prohibit these modifications, the underlying reason is not bureaucratic ('just because the rules forbid it'), but rather one of physical safety. Nor is it primarily due to aerodynamics or speed, as the legislative priority is always human safety.

What is the main technical and safety reason why the front part of a vehicle should not be modified?

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