What must not happen if a flat tire occurs in relation to CNG container components?

In the event of a flat tire, it is crucial that no components of the Compressed Natural Gas (CNG) system come into contact with the road surface. This is primarily because the components of a CNG system are designed to maintain a specific pressure and integrity to safely store and transport natural gas.

If these components were to touch the road, they could potentially be damaged or compromised. Damage to the CNG container or its fittings could lead to leaks, which presents significant safety hazards, including the risk of fire or explosion. Therefore, maintaining a safe distance between these components and the road ensures that they remain protected and function properly.

In contrast, the other options imply scenarios that could compromise the integrity and safety of the CNG system. For example, suggesting that components could adjust automatically or that they can be placed at the lowest point does not address the necessity of maintaining the system’s structural integrity during such an emergency.