air quality depending traffic management for lorries in the inner city of hagen

Fred Weber

2010 ANNUAL POLIS CONFERENCE 25./26. November

2010 , Dresden

© Department of Environment – City of Hagen

Air quality depending traffic management for lorries in the Air quality depending traffic management for lorries in the inner city of Hageninner city of Hagen

View of Hagen from south east. Source: Ingo Kramer

Fred Weber


2010 , Dresden


AgendaAgenda

1. General information

- traffic situation

- climatic conditions

2. Results

- factors of influence

- environmental effects

- transferability

3. Conclusion for Clean Air Planning

Fred Weber


2010 , Dresden

3


TRAFFIC SITUATION

Fred Weber


2010 , Dresden

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Strong atmospheric inversion (direction of view inner city).

lowest point of the city area is at 86 m, the highest at 438 m

• high number of strong atmospheric inversions

• high number of days with low wind speed

Climatic and Topographic ConditionsClimatic and Topographic Conditions

Fred Weber


2010 , Dresden


11.09.06 12.09.06 13.09.06 14.09.06 15.09.06 16.09.064 8 12 16 20 4 8 12 16 20 4 8 12 16 20 4 8 12 16 20 4 8 12 16 20

D atum / Uhrze it

0

50

100

150

200

250

NO2 - Im

missione

n (µ

g/m

³)

0

200

400

600

800

1000

NOx - Emissionen

(µg / m

*s)

N O x - Em iss ionen

N O 2 - Im m issionen

0

45

90

135

180

225

270

315

360

Windr

ichtun

g (°)

0

0 .5

1

1.5

2

2.5

3

3.5

4

Windg

esc

hwindigke

it (m

/s)

Inversion

W indrichtung Überdach

W indgeschw indigkeit Überdach

Time series analysis - Interaction between different parameters ( 1 week)

Interaction of Influencing FactorsInteraction of Influencing Factors

• solar radiation is relevant

(but only in summer)

• high NO2-Immissions with wind directions from N, NW, and NE

• high NO2 Emissions on weekdays only (6:00 am to 8:00 pm)

• high NO2 Emissions at low wind speed (< 1,6 m/s)

Fred Weber


2010 , Dresden


simdrivewind speed, wind direction, solar radiation,

Emission NO2

no blocking

blocking

Flow chart of the control programFlow chart of the control program

0

1

Data analysis to update the control

Archiving of data input und control signal

Data-input detection

Read Data

Input status

Traffic computer

controls

dynamic traffic signs

transmission

Control signal

Data analysis to update the control

Data-input detection

Read Data

Input status signal

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2010 , Dresden

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Temporary Traffic Management ConditionsTemporary Traffic Management Conditions

Locking only on weekdays (Monday to Friday) between 06:00 am and 08:00 pm.

• Temporary closures minimum 3 hours.

• Prolongation of closure for 1,5 hours in case of no

improvement.

Fred Weber


2010 , Dresden

8


Contempt of road closure.

• 70% of disobeying

• police control is necessary

PracticalPractical Test Test

Fred Weber


2010 , Dresden


ExpectedExpected ChanChangege

% 29 100

NO2 (annual mean) µg/m³ 2 4 – 9

NO2 (hourly mean > 200 µg/m³ no of Days 6 9 – 14

µg/m³ 0.5 1.7 – 1.8

PM10 (daily mean > 50 µg/m³) no of Days 0 3 – 10

Blocking Phase dynamic II dynamic II(test operation) (calculated)

Trucks Volume

PM10 (annual mean)

Fred Weber


2010 , Dresden

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Transferability Transferability

This method can principally be transferred to other cities.

The system must be adapted to a given local situation based on measurements.

For online-mode meteorological parameters (wind direction, wind speed, solar radiation) are sufficient.

Alternative and emission free routes are absolutely necessary!

Fred Weber


2010 , Dresden

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ConclusionConclusion fofor r CleClean an AAir ir PlanPlanning in Hagenning in Hagen

• A dynamic, temporary blocking of HDV traffic alone will not succeed in compliance to air quality standards.

• Positive effects on the air quality are achievable by a „HDV-routing system“.

• The dynamic immission-relevant re-routing system should be implemented as an additional control instrument to distribute HDV traffic to less polluted roads.

Fred Weber


2010 , Dresden


lorry route concept combined with air quality based traffic management

retrofitting of public transport (SCRT) and buying new hybrid- buses (impl. status 90%)

road bypass for inner city (planning finished)

setting up an environmental zone(subject to the resolution of the

city council)

Clean air plan: Clean air plan: main focus on trucks, main focus on trucks, buses buses andand car traffic car traffic

Fred Weber


2010 , Dresden

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Look- OutLook- Out

The final monitoring results are expected in April next year.

In parallel, the EU Notification for NO2 will be prepared.

From today's perspective, additional short term actions are necessary to get an extension of time for NO2 reduction, e.g.

setting up an environmental-zone

Fred Weber


2010 , Dresden

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Thank you for your attention!

Fred Weber


2010 , Dresden

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temporary blocking trucks > 3,5 tons (dynamic signs)

rerouting-concept (static signs)

road bypass for inner city (main station)

Basic concept: Ring extensionBasic concept: Ring extension

Fred Weber


2010 , Dresden


0

20

40

60

80

100

%

100.0%

3.9%

100.0%

8%

100.0%

5.6%

S N fz

P K W

PM 10PM 2,5NO X

Comparison of emissions by HDV and Cars

EMISSIONS CAUSED BY TRAFFICEMISSIONS CAUSED BY TRAFFIC

• 25 times more NOx

• 18 times more PM10

• 18 times more PM 2,5

air quality depending traffic management for lorries in the inner city of hagen

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