PARIS ROAD TRAFFIC

MANAGEMENT SYSTEM

Luc CHARANSONNEY (luc.charansonney@paris.fr)

Engineer, Traffic management headquarters, Paris Roads and Mobilities Administration

Luc Charansonney 1

April 16th, 2014

Paris traffic management system

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From an infrastructure-based policy to

a demand management strategy

Luc Charansonney

~ 1975 : cancellation of major motorway projects,

and first thoughts of a centralized traffic lights

management system

1979-1981 : first control system (SURF1000)

1980s-1990s : system extension and modernization

2012 : SURF3 (cars, public transport, pedestrians)

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1967 Inner-Paris motorway masterplan

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PARIS (inner-city)

SURF3~1500 junctions

VAL-DE-MARNE

PARCIVAL~600 junctions

SEINE-ST-DENIS

GERFAUT II~600 junctions

HAUTS-DE-SEINE

SITER~200 junctions

PARIS (ringway)

IPER-REPER

Motorways and

national expressways

SIRIUS

Paris metropolitan area

road traffic management systems

Two traffic management headquarters

for Paris

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1. BERLIER : For Paris inner-ringway (Périphérique)

2. LUTECE : For the inner-city road network

The ringway system

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SURF1000

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SURF3 (since 2012)

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Preventing and fighting congestion

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Time-based actions

Timing plans based on the time of day (morning or

evening peak, off-peak, night…)

Spatial arrangements

Junctions layout

Individual junction control

Sensors on junction inbound and outbound lanes

Demand management

Traffic information, parking lots, …

SURF3

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Static library of timing plans

3 levels of control:

Area

Sub-area

Junction

SURF3 levels of control

Area

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Set of about 50-60 signalized junctions

Timing plans chosen according to:

Time (night, morning, day, evening)

Flow measures

Defining a control strategy for an area

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For a specific area, choice based on two factors:

User category: private vehicles or pedestrians

Traffic situation: morning, mid-day, evening, night

Chosen from:

flow measures (« vectorial » choice)

time (if sensors are out)

SURF3 levels of control

Sub-area

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Within a specific area

Set of about 3-4 signalized junctions

Local timing plans modification based on:

occupancy measures

time-based pre-programmed actions

SURF3 levels of control

Junction

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Individual junction

Additional timing plans:

Radars (to prevent junction jam)

Pedestrian calls

Tram or bus priority

SURF3 levels of control

Junction

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23 2421603

0023T12

0023T09

1603T08

1603T08

0023T08

0242T09

SURF3

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Sub-area(automatic decision)

Special

control

Area

Strategy

Sub-area(manual decision

overriding algorithm)

Managing signalized junctions for all users

Contributing to Paris mobility

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Public transport priority systems

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Tram (lines T2 and T3 of the regional network)

Bus lines

Paris tram (2006, 2012, 2017…)

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Tram priority system

automatic junction monitoring

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Pedestrians

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Giving additional crossing times to pedestrian on

busy streets

For example: Paris city-center, 1200PM-0200PM

Cars

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Congestion is effectively reduced and capacity

increases (measured through system evaluations

carried out in the 1990s during the system

deployment)

Traffic information

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VMS (on the ringway and at the interchanges)

Traffic information

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Website broadcasting (« Sytadin »)

Traffic information

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Website broadcasting (« Sytadin »)