True or False: A helmet should be replaced after a crash, regardless of visible damage.

A helmet should indeed be replaced after a crash, even if there are no visible signs of damage. This is because the materials and structure of the helmet can be compromised internally during an impact, which may not be immediately apparent. Helmets are designed to absorb the energy of an impact to protect your head, but this protective capability can be diminished after a collision.

Replacing the helmet ensures that you are using a fully effective piece of safety equipment, as it might not provide the necessary protection in the event of a subsequent accident. This principle is widely advocated by safety organizations and manufacturers, emphasizing the importance of maintaining optimal safety standards for cyclists, especially in public safety contexts where the risks may be higher.

The other options suggest different conditions for replacement, which can lead to unnecessary risks if one mistakenly believes a helmet is still safe to use after a crash without clear external damage.