Traffic Light Coordination - Impacts on mobility

Traffic Light Coordination - Impacts on mobility

Roma Servizi per la Mobilità S.r.l.

Rome Mobility Agency Marco Cianfano

Consortium Meeting Madrid

2013 May, 8^th

Key issue

• The context

• Mobility Planning in Rome

• Present vs Mid term scenario

• ICT Emissions: case study overview

• Traffic survey – ICT on and off

• Preliminary Results

The context: Rome

City of Rome

Province of Rome

Municipal Area 1.285 skm Population

Metr. Area 4.300.000 City residents 2.900.000 Road Network km 5.000

Main road network km. 800

Vehicles 2.650.000

cars 1.890.000

2 wheels 600.000 goods delivery 160.000

Daily Trips 6.100.000 Peak-hour Trips 560.000

Management of the Mobility – 5 concentric zones with increasing constraints

Zone 5: Municipality Area – 1285 km² Emission Check “Blue Label”

(yearly all vehicles and PTWs)

Zone 4: External Ring (GRA) – 344 km² Tourist Coaches Regulation

Zone 3: Green Belt –154 km² Pollution emergencies, Multi-modal nodes, Park&ride

Zone 2: Rail Ring – 48.4 km²

Emission restrictions, Pay parking schemes Zone 1: LTZ – 5.5 km²

Stop to all vehicles (except permit holders) Pedestrian – 0.5 km²

Zero Emission Area (walking & electric)

Rome Socio-Economic Structure

Residents Workers

Socio-economic Density Residents + Workers / ha)

Rome Road Network

Rome Public Transport Network

Transport Line Length n°

Km stops

Metro 37 48

Tramway 39 188

Urban Railway 58 47

Railways⁽²⁾ 152 42

Corridors 32

(2) In the Metropolitan area

TOTAL 318

The Modal Shift in Rome

0%

10%

20%

30%

40%

50%

60% Public

Transport Private vehicles PTW

Pedestrian

0%

10%

20%

30%

40%

50% Public

Transport Private vehicles PTW

Pedestrian

METROPOLITAN AREA

OLD TOWN - CITY CENTRE

Rome PT Network

MID TERM SCENARIO Transport Line Extensions:

+32 km Metro lines

• Line B north to Casal Monastero

• Line B1 to Jonio

• Line C to San Giovanni

+90km Corridors

Il numero di spostamenti dello scenario futuro tiene conto dell’aumento previsto in termini di residenti nel Comune di Roma

Present

scenario (%) Mid term

Scenario (%)

Modal shift differences

(%)

Modal shift differences

Vehicle 287.940 50,9 289.750 50,0 -0,8 1.810

Motorbike 89.000 15,7 89.320 15,4 -0,3 320

Public

transport 155.760 27,6 166.530 28,8 +1,2 10.770

Feet 32.640 5,8 33.050 5,7% -0,1 410

Sum 565.340 100 578.650 100 - 13.310

The new modal shift – morning peak hour – ROME

Present vs Short term scenario

CO2 Emission (tons/year)

ICT EMISSIONS

Development of a methodology and tool to evaluate the impact of ICT measures on road

transport emissions

Objectives and Rome case study

Type of ICT/ITS

Traffic Management with particular regards to Traffic Lights Optimization

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Rome case study - Overview

23 TRAFFIC LIGHTS (under UTC system: plan

selection scheme)

Itinerary of 6,1 km

Urban Road: 2000/4000 veh/h

Rome case study - Survey

UTC OFF UTC

ON

UTC ON

2013, April 9^th 2013, April 10^th 2013, April 11^th

- 6 hours/day

- Morning Peak (7:30/9:30)

- Afternoon Off peak (12:30/14:30) - Afternoon Peak (17:30/19:30)

- 2 vehicles with GPS and Engine/fuel monitor systems

- Fiat Punto

- Fiat Panda 1.3 MJ

- Survey Numbers:

- 67 trips

- 410 travelled km

Rome case study – Traffic flows

0 50 100 150 200 250

0.00 0.30 1.00 1.30 2.00 2.30 3.00 3.30 4.00 4.30 5.00 5.30 6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00 12.30 13.00 13.30 14.00 14.30 15.00 15.30 16.00 16.30 17.00 17.30 18.00 18.30 19.00 19.30 20.00 20.30 21.00 21.30 22.00 22.30 23.00 23.30 0.00

Number of Vehicles [veh/5 mins.]

Time of the Day

09/04/2013 10/04/2013 11/04/2013 0

50 100 150 200 250 300

0.00 0.30 1.00 1.30 2.00 2.30 3.00 3.30 4.00 4.30 5.00 5.30 6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00 12.30 13.00 13.30 14.00 14.30 15.00 15.30 16.00 16.30 17.00 17.30 18.00 18.30 19.00 19.30 20.00 20.30 21.00 21.30 22.00 22.30 23.00 23.30 0.00

Number of Vehicles [veh/5 mins.]

Time of the Day

09/04/2013 10/04/2013 11/04/2013

Similar traffic level over the three days of survey, in both directions (city centre and GRA)

Effects of UTC off can be read without considering traffic conditions

CITY CENTRE

GRA

Rome case study – Preliminary

results

Rome case study – Preliminary

results

Rome case study – Preliminary

results

Time (min) Avg Speed (km/h)

Idle time (v < 3 km/h)

No

stops ICT

27.3 26.5 8.9 501.0 OFF

23.8 29.0 7.2 387.2 ON

Time (min) Avg Speed (km/h)

Idle time (v < 3 km/h)

No

stops ICT

31.7 22,5 10,7 570.0 OFF

21.5 30.5 5.6 306.9 ON

Rome case study – Preliminary results

OFF ON

OFF ON

- UTC off - effects:

+ 30% N. Stops + 10% Avg Speed

- UTC off - effects:

+ 85% N. Stops + 35% Avg Speed

Time (min) Avg Speed (km/h)

Idle time (v < 3 km/h)

No

stops ICT

18.8 35.2 5.1 282 OFF

17.5 35.8 3.8 211 ON

Time (min) Avg Speed (km/h)

Idle time (v < 3 km/h)

No

stops ICT

18.1 34.6 4.0 213 OFF

19.8 33.9 5.3 286 ON

Rome case study – Preliminary results

OFF ON

OFF ON

- UTC off - effects:

+ 33% N. Stops - 2% Avg Speed

- UTC off - effects:

- 25% N. Stops - 2% Avg Speed

ITS in Rome – UTT (Urban Travel Times)

Targa: CC 555 AA 14-apr-12 11:50:39

Targa: CC 555 AA 14-apr-12 12:11:48 CC 555 AA

CC 555 AA

PLATE RECOGNISED AND TIME RECORDED AT THE ENTRY SECTION

PLATE RECOGNISED AND TIME RECORDED AT THE EXIT SECTION

TRAVEL TIME 21 mins 9 secs

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

Via Appia UTT Sections

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

0 5 10 15 20 25

6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00

AVERAGE TRAVEL TIME [minutes]

Time of the Day

09/04/13 10/04/13 11/04/13 UTC ON

UTC OFF UTC ON

TUE WED

THU

Via Appia UTT Sections

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

Via Appia UTT Sections

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

0 5 10 15 20 25

6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00

AVERAGE TRAVEL TIME [minutes]

Time of the Day

09/04/13 10/04/13 11/04/13 UTC ON

UTC OFF UTC ON

TUE WED THU

Road works on the section that reduced carriageway

from 2 lanes to 1

0 5 10 15 20 25

6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00

AVERAGE TRAVEL TIME [minutes]

Time of the Day

09/04/13 10/04/13 11/04/13

0 5 10 15 20 25

6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00

AVERAGE TRAVEL TIME [minutes]

Time of the Day

09/04/13 10/04/13 11/04/13

Different traffic flow conditions on sections

Internal section: urban

External section: suburban

Different efficiency of UTC measures

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

UTC measures - Effects on traffic

Incidents events that produced heavy congestion on Rome’s Ring Road (GRA)

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

0 5 10 15 20 25

6.00 6.30 7.00 7.30 8.00 8.30 9.00 9.30 10.00 10.30 11.00 11.30 12.00

AVERAGE TRAVEL TIME [minutes]

Time of the Day

09/04/13 10/04/13 11/04/13 12/04/13 UTC ON

UTC OFF UTC ON INCIDENTS

TUE WED

THU FRI

UTC measures - Effects on traffic

Roma Servizi per la Mobilità Madrid, 8^th-10^thMay 2013

Rome case study – Preliminary conclusions

- Important effects on travel times and speed - Stop and go effect increases

- More the traffic flow is high more the UTC effetcs is important (platoon effects??)

- Fuel consumption???