§Assumptions:
□SPD-HARM prototype has built in
15 second latency between updates to human, because of
“human-in-the-loop” latency needs
□Driver compliance rates with SPD-HARM speeds are unknown
□Real world observer and
microsimulation model cannot tell the difference between a driver who got the
message but ignores it, and a driver who did not get the message because they did
not have the device or there was communication loss
□Defined new term, “net response
rate” which is the percentage of drivers complying precisely with
SPD-HARM speeds
▪Net Response Rate =
Market Penetration x Compliance Rate x
(1-Communication Loss)
▪
§Approach:
□Varied net response rates: 0%, 10%, 25%, 50%
□Extrapolated simulation results to different
combinations of market penetration, communication loss, and compliance yielding the same
overall net
response rate