Is the specific challenge with respect to achieving cost targets, a single device, or spectrum deconfliction?
Many of the technologies for CDA are relatively mature and products are readily available for integration, such as LiDARs & radars for sensing and a variety of communication solutions (e.g. Qualcomm products). What is the particular aspect of the problem that the FHWA is trying to address? Is it that current technologies are too costly, or that communications are too latent, or that spectrum deconfliction is an issue? Is there a cost target that the FHWA thinks is necessary for adoption at scale?
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Pavle Bujanovic commented
1. The goal is to develop a small sensor that can, with minimal computational burden, accurately sense/track other relevant objects of choice and that can also communicate with other transportation entities (e.g., vehicles or infrastructure) with a minimum burden on the communication network.
2. All the answers provided in this question are part of what is needed, in reverse order in terms of priority. Also important is a small form factor.
3. No, it is reasonable to assume that such a device will be expensive initially but the price will decrease over time.