SPD-HARM Illustrative
20
Vehicles slowing down at
recurrent bottleneck broadcast
speed, location, etc.
1
TMC identifies impending congestion
and initiates speed harmonization
plan for upstream vehicles
2
TMC
Slow
to 45
Slow
to 45
Slow
to 45
TMC relays
appropriate speed
recommendations to
upstream vehicles
3
Upstream vehicles implement
(or alert drivers to) the
recommended speed
4
Slow
to 45