What is a common mistake regarding stickers in parking enforcement?

Failing to properly affix stickers is a common mistake in parking enforcement because the effectiveness of the sticker depends greatly on its proper placement. If a sticker is not securely attached, it may fall off or become unreadable, making it difficult for enforcement personnel to identify the vehicle as either compliant or non-compliant with parking regulations. Properly affixing stickers ensures that they remain visible and adhered for the duration they are intended to be in place, which is essential for maintaining order and enforcing parking rules consistently.

Other options, while potentially problematic in their own right, do not directly impact the fundamental purpose of stickers in the same way. Using multiple types of stickers could cause confusion but doesn't inherently compromise the stickers' ability to communicate compliance or violations. Removing stickers too quickly can result in lost enforcement opportunities, but again, the essential function of communication is not hindered by timing alone. Likewise, only applying stickers in certain weather conditions may make enforcement inconsistent, but doesn't directly relate to the sticker's adherence or visibility. Thus, the correct choice focuses on the critical aspect of proper application and its impact on enforcement effectiveness.