Use of MOVES2010 in Link Level On-RoadUse of MOVES2010 in Link Level On Road Vehicle Emissions Modeling Using

CONCEPT-MV

P t d b Ch i Li dhjPresented by Chris LindhjemAllison DenBleyker, Michele Jimenez, John Haasbeek, Alison K Pollack ENVIRON International CorporationAlison K. Pollack, ENVIRON International Corporation

Zheng Li, Clark CountyJuly, 2010

TemplateTemplate

July, 2010

Overview

• Use and function of CONCEPT I ti MOVES2010• Incorporating MOVES2010– New model structure

Use of MOVES2010 Lookup Tables– Use of MOVES2010 Lookup Tables– Describe new model estimates– Implications of revised emissions with MOVES2010Implications of revised emissions with MOVES2010

• Sample regional results with detailed emission process and vehicle typep ocess a d e c e type

• Next steps using MOVES2010a

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Link-Level Emissions:CONCEPT MV Model

• Uses output from transportation demand modelsUses output from transportation demand models (TDM) for vehicle volumes

• Generates gridded, hourly link-level emissions by vehicle class

• Uses MOVES vehicle classes (source types) and road types (facilities)road types (facilities)

• Detailed temporal resolution of traffic volume, speeds, and VMT mix (truck mix!)

• Uses gridded meteorological data for temperature and humidityU MOVES2010 i i f t

3

• Uses MOVES2010a emission factors

Basic Input(Link Activity Data)

• Link volumes

(Link Activity Data)

• Link speeds – Calculated from link

volume and capacityvolume and capacity (Standard Algorithms)

– External file (optional)• Vehicle population

– Area VMT for heavy-duty trucks and vehicletrucks and vehicle registration (early EPA guidance) for light-duty cars and trucks

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Other Traffic Data

• Vehicle (source) types – Determined from vehicle classification data– By road type (limited access and other, ramps)– Temporal (time of day and day of week)

• Trips Start and Destinationp– Derived from survey data– By time of dayy t e o day– By Traffic Analysis Zones (TAZ), subregional

areas

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Traffic Analysis Zones

Clark Co. Early Trip Starts Clark Co. Mid-Day Trip Starts

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Advanced Features (Queueing)

• Traffic volumes exceeding capacity– Cap above which the volume is queued– Queued determined

Queue length equals number of cars and lengthCar length variable includes gap between carsQ l th bt t d f li k l th t ti tQueue length subtracted from link length to estimate flowing length

– Speed averaged between queued and flowingSpeed averaged between queued and flowingGeometric average (averaged by time) speedMay be possible to break link into queued and flowing y p q g(average speed does not produce average emissions)

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Estimating Emissions with MOVESEstimating Emissions with MOVESLocal Parameters

Temperature

1) G t th i i i t i b

e pe atu eFuel SpecificationsControl Programs

Vehicle Age Distributions

MOVES2010

1) Generates the emission inventories by county (Inventory Mode)

OR

gVehicle Miles Traveled

Vehicle PopulationsSpeed Distributions

2) Lookup tables of emission factorsa. Running processes (g/mile)b. Start, idle, and parked (g/vehicle-hour)

E ti ( / hi l h )c. Evaporative (g/vehicle-hour)

MOVES requires vehicle populations in addition to vehicle miles traveled

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miles traveled

MOVES2010 and Link-Level Emissions

Process NameRateperdistance (g/mile)

Ratepervehicle (g/vehicle/hour)

Rateperprofile (g/vehicle/hour)Process Name (g/mile) (g/vehicle/hour) (g/vehicle/hour)

Running Exhaust X - - Crankcase Running Exhaust X - - Brakewear X - - Tirewear XTirewear X - -Evaporative Fuel Vapor Venting X - X Evaporative Permeation X X - Evaporative Fuel Leaks X X - St t E h t XStart Exhaust - X -Crankcase Start Exhaust - X - Extended Idle Exhaust - X - Crankcase Extended Idle Exhaust - X - R f li Di l t VRefueling Displacement Vapor Loss - - - Refueling Spillage Loss - - -  

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MOVES2010 and Link-Level Emissions• Rateperdistance (g/mile)

– VMT (Hourly speeds)M f i (V hi l l i d f fl d )Measure of congestion (Vehicle volumes, capacity, and free flow speeds)Alternative files (fixed by transportation models)

– Vehicle type (Hourly by road type)– Three dimensional emission factor lookup tables (temperature,

humidity, and speed)

• Rateperprofile (g/vehicle/hour)p p (g )– Number of vehicles for evaporative emissions vapor venting– Affected by daily temperature profile (previous hour temperatures)

Parked vehiclesParked vehicles Includes former MOBILE6 ‘diurnal’ and ‘hot soak’ emissions processes

– Spatially allocated to trip ends by TAZ

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Speed Matters (Light-Duty)

2 5

Running Exhaust Emission Rates by Speedat 75F and 40% RH

Las Vegas, Nevada, 2007

2

2.5

1.5

te (g/m

i)

Rural Restricted Access ‐ Sum of NOX

Rural Restricted Access ‐ Sum of THC

Rural Unrestricted Access Sum of NOX

1

Emission

 Ra Rural Unrestricted Access ‐ Sum of NOX

Rural Unrestricted Access ‐ Sum of THC

Urban Restricted Access ‐ Sum of NOX

Urban Restricted Access ‐ Sum of THC

UrbanUnrestricted Access ‐ Sum of NOX

0.5

Urban Unrestricted Access ‐ Sum of NOX

Urban Unrestricted Access ‐ Sum of THC

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0

2.5 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75

Average Speed (mph)

MOVES2010 and Link-Level Emissions

• Ratepervehicle (g/vehicle/hour)– Parked vehicle emissionsParked vehicle emissions– Vehicle population, vehicle type, and temperature (humidity

incorporated as an off-model calculation)Start exhaust (temperature and humidity)– Start exhaust (temperature and humidity)

Hourly emission rates affected by temperatureSpatially allocated to trip starts by TAZ

E t d d idl– Extended idle Hourly emission rates affected by temperature and humiditySpatially allocated to truck stops or other locations

– Permeation and leaksAffected by temperatureSpatially allocated to trip ends from TAZ

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Clark County Trial Run

• Complete but approximate traffic volumes, hi l l ti d t ivehicle population, and trips

• Weekday sample for 2007• Full CONCEPT and MOVE2010 run with all

vehicles and processesp

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Clark Co. TOG Emissions

4

Hourly Emissions by Source Type

3

3.5

2

2.5

sion

s (TONS)

10 ‐Motorcycles

20 ‐ Passenger Cars

30 ‐Other 2 axle 4 tire vehicles

1

1.5Emiss 30  Other 2 axle 4 tire vehicles

40 ‐ Buses

50 ‐ Single Unit Trucks

60 ‐ Combination Trucks

0

0.5

14

0

1 2 3 4 5 6 7 8 9 101112131415161718192021222324

Hour (LST)

Clark Co. NO Emissions

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Hourly Emissions by Source Type

4

5

3

4

sion

s (TONS)

10 ‐Motorcycles

20 ‐ Passenger Cars

30 ‐Other 2 axle 4 tire vehicles

2

Emiss

40 ‐ Buses

50 ‐ Single Unit Trucks

60 ‐ Combination Trucks

0

1

15

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Hour (LST)

MOVES2010 Process (TOG)

1.4

Hourly Emissions by Emission Process

1

1.2

0.8

ission

s (TONS)

Crank Run Exh    

Crank Start Exh   

Evap Fuel Leak    

Evap Fuel Vent

0.4

0.6Emi Evap Fuel Vent   

Evap Permeation   

Running Exh   

Start Exh    

0.2

16

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Hour (LST)

MOVES2010 Process (NO)

1.6

1.8

Hourly Emissions by Emission Process

1 2

1.4

0 8

1

1.2

sion

s (TO

NS)

Crank Run Exh    

Crank Start Exh    

0.6

0.8

Emiss

Running Exh   

Start Exh    

0.2

0.4

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0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Hour (LST)

MOVES Gridded Emissions

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Full MOVES2010 CONCEPT Implementation

• Work in progress: Full MOVES2010a CONCEPT I l t tiCONCEPT Implementation – Implemented MOVES into CONCEPT MV link-

b d i i f L V i t t dbased emissions for Las Vegas using start and running exhaust, and evaporative emissions MOVES2010a lookup tablesMOVES2010a lookup tables

– Cooperative program to fully implement MOVES2010a for any other area in U SMOVES2010a for any other area in U.S.

RampsMeteorological preprocessor (multiple counties)

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g p p ( p )PM estimates incorporation

Discussion/questionsDiscussion/questions

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