Support for signs that will remain in place more than how many days should be fixed rather than portable?

In maintenance of traffic procedures, the guidelines recommend that signs intended to remain in place for more than three days should be supported in a fixed manner rather than using portable supports. This is primarily because fixed supports offer greater stability and visibility, ensuring that the signs remain upright in various weather conditions and do not pose a safety hazard by being easily moved or knocked down.

When signs are temporary and expected to be in place for a shorter duration, portable supports are appropriate as they allow for flexibility and easier relocation if needed. However, once the duration extends beyond three days, the need for enhanced structural integrity becomes critical to maintain consistent traffic guidance and safety standards. This practice aligns with best practices in traffic management to minimize confusion and maximize driver safety on the roadways.