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Station Arrive to the
First "Left
Lane Closed
Ahead" Sign
Station Assign New
Speed at
the "Left
Lane Closed
Ahead" Sign Assign New
Speed at
the "Left
Lane Closed
Ahead" Sign Truck Car Figure 23: Flowchart of the ARENA Traffic Simulation Model (continued) Assign different
speed values for the
entitytransporter
pairs using a speed
distribution derived
from actual data
collected
Entities(vehicles)
travel through the
mainline with free
flow speed
Entities (vehicles)
arrive to the first
lane closure sign and
new speeds assigned
for the travel in the
construction zone 81
DRIVING LANE
Assumptions Truck PASSING LANE Car
Car Truck At First "Left Lane
Closed Ahead" Sign
Station Passing Lane Speed
>= Driving Lane
Speed NO NO NO NO YES NO
Lag Gap in Driving
Lane >= 170 ft YES NO
Lag Gap in Driving
Lane >= 140 ft YES NO
Lag Gap in Driving
Lane >= 95 ft Lag Gap in Driving
Lane >= 65 ft Go to Next Station on
Passing Lane (250 ft
after the first 'Left Lane
Closed Ahead' Sign) YES YES NO Lead Gap in Driving
Lane >= 170 ft YES YES Lead Gap in Driving
Lane >= 140 ft 35 ft/s >= Driving
Lane
Speed > 10 ft/s
NO YES YES 55 ft/s >= Driving
Lane
Speed > 35 ft/s
NO YES Lead Gap in Driving
Lane >= 215 ft 75 ft/s >= Driving
Lane
Speed > 55 ft/s
NO YES YES Driving Lane
Speed > 75 ft/s
NO YES 35 ft/s >= Driving
Lane
Speed > 10 ft/s
NO NO Lag Gap in Driving
Lane >= 215 ft 55 ft/s >= Driving
Lane
Speed > 35 ft/s
NO NO NO 75 ft/s >= Driving
Lane
Speed > 55 ft/s
NO NO YES Driving Lane
Speed > 75 ft/s YES YES YES Lead Gap in Driving
Lane >= 95 ft Lead Gap in Driving
Lane >= 65 ft YES Merge and Go to Next
Station on Driving Lane
(250 ft after the first
'Left Lane Closed
Ahead' Sign) Figure 23: Flowchart of the ARENA Traffic Simulation Model (continued) YES Explanations:
According to the
difference in speed
between the entitytransporter pair on
passing lane and the
entitytransporter
pair on driving
lane, the lag and the
lead gaps are
determined
Entity cartransporter pairs on
the passing lane at
the first “Left Lane
Closed Ahead” sign
check for the
availability of space
on driving la ne. If
the specified gaps
are available on the
driving lane, entity
cartransporter pair
merges to the
driving lane; else it
continues to travel
on the passing lane. 82
DRIVING LANE
Assumptions Truck PASSING LANE Car Explanations:
Truck
Car
At First "Left Lane
Closed Ahead" Sign
Station Passing Lane Speed
>= Driving Lane
Speed NO NO NO NO Truck Car YES NO
Lag Gap in Driving
Lane >= 215 ft YES NO
Lag Gap in Driving
Lane >= 185 ft YES NO
Lag Gap in Driving
Lane >= 140 ft Lag Gap in Driving
Lane >= 110 ft Go to Next Station on
Passing Lane (250 ft
after the first 'Left Lane
Closed Ahead' Sign) YES YES NO Lead Gap in Driving YES
Lane >= 215 ft YES Lead Gap in Driving
Lane >= 185 ft 35 ft/s >= Driving
Lane
Speed > 10 ft/s
NO YES YES 55 ft/s >= Driving
Lane
Speed > 35 ft/s
NO YES Lead Gap in Driving
Lane >= 260 ft 75 ft/s >= Driving
Lane
Speed > 55 ft/s
NO YES YES Driving Lane
Speed > 75 ft/s
NO YES 35 ft/s >= Driving
Lane
Speed > 10 ft/s
NO NO Lag Gap in Driving
Lane >= 260 ft 55 ft/s >= Driving
Lane
Speed > 35 ft/s
NO NO NO 75 ft/s >= Driving
Lane
Speed > 55 ft/s
NO NO YES Driving Lane
Speed > 75 ft/s YES YES YES Lead Gap in Driving YES
Lane >= 140 ft Lead Gap in Driving
Lane >= 110 ft YES Merge and Go to Next
Station on Driving Lane
(250 ft after the first
'Left Lane Closed
Ahead' Sign) Figure 23: Flowchart of the ARENA Traffic Simulation Model (continued) Entity trucktransporter pairs
on the passing lane
at the first “Left
Lane Closed
Ahead” sign check
for the availability
of space on
driving lane. If the
specified gaps are
available on the
driving lane, entity
trucktransporter
pair merges to the
driving lane; else
it continues to
travel on the
passing lane. 83
DRIVING LANE
Assumptions PASSING LANE Truck
Arrive to the
Station 250
feet after the
first "Left
Lane Closed
Ahead Sign Car Car Arrive to the
Station 250
feet after the
first "Left
Lane Closed
Ahead Sign Same Speed
and Gap
Check
Procedure
for both
entity types Explanations: Arrive to the
Station 250
feet after the
first "Left
Lane Closed
Ahead Sign Same Speed
and Gap
Check
Procedure
for both
entity types The same gap
acceptance and lane
changing procedure
continues until the
beginning of the
left lane closure
taper. Arrive to the
Station 250
feet after the
first "Left
Lane Closed
Ahead Sign Truck Transport to
the Second
"Left Lane
Closed
Ahead" Sign Transport to
the Second
"Left Lane
Closed
Ahead" Sign Transport to
the Second
"Left Lane
Closed
Ahead" Sign Transport to
the Second
"Left Lane
Closed
Ahead" Sign Truck Car Truck Car Figure 23: Flowchart of the ARENA Traffic Simulation Model (continued) Entitytransporter
pairs on the passing
lane continue to
check for the
available gap for
merging to the
driving lane. They
check for...
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 Spring '13
 Mr.Kau

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