Class B supports for temporary sign support requirements shall be used in which of the following locations?

The use of Class B supports for temporary sign requirements specifically in areas within the clear zone that are protected by guardrail is crucial for maintaining safety and compliance with traffic management standards. The clear zone is defined as the area adjacent to the roadway that is intended to remain free of obstacles to reduce the potential for collisions.

When temporary signs are placed in this area, using Class B supports that are backed by guardrail provides necessary protection for both the signs and the vehicles. The guardrail acts as a safety barrier, aimed at minimizing the risk of vehicles striking the supports of the temporary signs, thus reducing possible injuries and damages.

Having Class B supports in locations that are solely within the clear zone or only outside it would not consider the protective measures that guardrails provide, potentially leading to increased hazards during roadway operations. Similarly, only using these supports inside the construction zone does not take into account the need for sign stability and safety when adjacent to open traffic areas. Thus, the requirement for Class B supports is clearly aligned with best practices to enhance safety in areas where additional protective measures, like guardrails, are present.