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U.S. Department of
Transportation
Research and Innovative
Technology Administration
Communications System for Security
§Delivery of the Certificate
Revocation List (CRL) is expensive and
technically demanding
§With incremental
or no CRL delivery:
□Certificate
Authority maintains CRL, but does not distribute. Instead, certificates
are withheld from misbehaving vehicles.
□Cellular data
costs drop substantially.
§With no CRL distribution, OBE
costs are the most expensive part of the
system:
□OBE costs
vary slightly for each scenario due to cost and power consumption
of subcomponents
□OBEs are necessary for
safety, so the incremental costs to serve the
function of communicating to the SCMS are relatively small
□Results
are very sensitive to inputs; uncertainty in conclusions is high