interstate 80 planning study automated & connected vehicles · pdf fileinterstate 80...

Interstate 80 Planning StudyAutomated & Connected Vehicles

Iowa DOT Leadership ConferenceGateway CenterOctober 17, 2017

I-80 Automated Corridors


I-80 Planning Study (PEL)


What do we hope to accomplish with the I-80 Study?

Guiding Principles Balance Mobility and Access

Design in consideration of emerging technologies

Right size Interstate 80

Consider practical modal solutions

Build on past study Effort

Engage stakeholders

Feed an implementation plan

Technical Memorandum Public Involvement Plan Guiding Principles for the Interstate System System Evaluation of Overhead Bridges Viability of Truck Only Lanes Diversion Strategies

Automated Corridors Existing Conditions Resiliency & Vulnerability Modal Options Tolling Considerations Vision for Infrastructure Investment


Trying to Answer What do we have that we don’t need

What do we need that we don’t have

How are we going to build it

How are we going to fund it

Can we make it expandable

Evaluate the effect of automated vehicles and emerging technology on:

– Safety

– Capacity & Operations

– Design Elements

– Travel Time Reliability


GM “Super Cruise”2017 Cadillac CT6

Levels of Autonomy

Tesla Model S

Waymo (Google)


AV/CV Adoption Rates: Passenger VehiclesSummary of Literature

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

2020 2025 2030 2035 2040 2045 2050 2055 2060

Pe

ne

tra

tio

n R

ate

Kockelman - Aggressive

VTPI - Conservative

VTPI - Aggressive

Kockelman - Conservative

Kockelman - Moderate

Goldman Sachs


Adoption Rates


Location2014 2040

AADT (vpd) Truck Volume AADT (vpd) Truck Volume

1.5 miles west of County Road M16

Pottawattamie County 23,500 8225 33,104 12,248

2.0 miles east of US 71

Cass County20,100 7839 29,585 11,834

1.0 miles west of US 63

Poweshiek County26,500 9275 44,962 16,186

2.0 miles east of IA 149

Iowa County31,200 9672 53,610 17,691

2.5 miles east of County Road X40

Cedar County33,500 11,725 64,774 23,966

1.5 miles east of Middle Road

Scott County30,800 9,240 58,974 17,102

Truck Volumes XX %

COUNCIL BLUFFS

DES MOINES

IOWA CITY

DAVENPORT

35%

39%

35%

31%

35%

30%

41%

47%

70%

72%

93%

91%

49%

51%

75%

83%

104%

85%

37%

40%

36%

33%

37%

29%

XX %TRUCK %GROWTH %


TC 2

TC 3

TC 4

TC 5

TC 1 Council Bluffs

Davenport


Des Moines

Traffic Analysis

• 2040 Projections

• Traditional HCM Approach

• DOT Statewide travel model runs

– 2040 4-lane I-80

– 2040 6-lane I-80

• Research on AV impact to

demand

– Induced trips due to AV

– Potentially longer trips as well

Traffic Analysis


20142025 -20%AV

2030 -50%AV

2040No-

Build

2040Build

No AV

2040 -25%AV

2040 -85%AV

Analysis Scenario 33,500 49,500 60,100 51,900 64,800 68,700 77,100

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

Ave

rage

Dai

ly T

raff

ic V

olu

me

Traffic Demand by Future Year and AV Market Penetration

2014 202520%

203050%

No-Build

Build25%

Build85%

Build0%

2040

• Key innovation = Custom VISSIM scripts for AV

• Custom vehicle types / behaviors

• Platoon formation / tracking / dissipation

Traffic Operations Analysis

VISSIM with AV

VISSIM without AV


Dark Blue – AV CarLight Blue – AV Car in platoonGreen – Manual Car

Purple – AV TruckYellow – Manual Truck

Interstate 80 Automated Vehicle SimulationAutomated Vehicles in Mixed Traffic with Human Drivers



Traffic Analysis 1

Early AV Adopters

(25%)

2

Rise of the AVs

(50%)

3

Limited AV Adopters

(20%)

4

AV Domination

(85%)

Simulated capacity with AV

• Default VISSIM driver behavior

• AV traffic mixes with non-AVs in all lanes

• Benefits reach substantial level at 50% AV• 85% AV – A 6-lane freeway can serve

roughly 1,800 additional vehicles during the peak hour

• Dependent on vehicle following / platooning code; likely to change over time

Simulation Benefits

TC 2

TC 3

TC 4TC 5

TC 1 Council Bluffs


Des Moines

Traffic Analysis

Davenport

Automated Vehicle Safety

Safety Analysis


Forward Collision Warning

Lane-Change Warning

Cooperative Adaptive Cruise Control

Safety Analysis Approach

Combine the crash reductions for all AV safety technologies

Apply the crash reduction factors to predicted future crashes

Pick AV safety application to mitigate crash

Lane-keeping assist reduces 50%-90% of target crashes

Crash Patterns for I-80

30% of crashes classified as run off road or crossed median


• Introducing automated vehicles reduces crashes

• Reductions near 70% of total crashes for 85% AV

I-80 Predicted Crash Rates

Safety Analysis Results


0%

10%

20%

30%

40%

50%

60%

70%

80%

Scenario 1 Early AVAdopters (25% AV)

Scenario 2 Rise ofthe AVs (50% AV)

Scenario 3 LimitedAV Adopters (20%

AV)

Scenario 4 AVDomination (85%

AV)Serious Injury InjuryProperty DamageTotal

1

Early AV Adopters

(25%)

2

Rise of the AVs

(50%)3

Limited AV Adopters

(20%)

4

AV Domination

(85%)

Crash Reduction Factor due to AV

Design Elements

~2030- 2050

~2050- 2070



I-80 PEL Study Website

https://www.iowadot.gov/interstatestudy

Automated Vehicles Video

https://youtu.be/fAw747arR1Y

Links

https://www.iowadot.gov/interstatestudy

https://youtu.be/fAw747arR1Y

QUESTIONS ???


www.dot.iowa.gov\interstatestudy

BRAD HOFERLOCATION ENGINEER / ASSISTANT OFFICE DIRECTOROFFICE OF LOCATION & [email protected]: 515-239-1787

http://www.dot.iowa.gov/interstatestudy

mailto:[email protected]

interstate 80 planning study automated & connected vehicles · pdf fileinterstate 80...

Documents