国产老头老太作爱视频Unmanned aerial systems (UASs) are an emerging technology being used in many fields, including surveying engineering. When UASs are used for these activities, they may operate in close proximity to active traffic. UASs could be distracting to drivers and increase safety concerns in these situations. Currently, there are no UAS warning signs, or temporary traffic control (TTC) signs approved by the Manual on Uniform Traffic Control Devices (MUTCD) to specifically inform drivers of roadside UASs.
For this study, new UAS TTC signs were designed and a questionnaire was developed to explore perspectives on UAS specific TTC. Participants drove in a high-fidelity driving simulator, which measured speed reduction, as participants drove past various configurations of TTC elements in advance of a roadside UAS operation. Continue reading