Historical road traffic data from permanent sensors from 2010 to year A-1.

This dataset corresponds to the history of that of the current year Road counting - Traffic data from permanent sensors

On the Parisian network, traffic is measured mainly through electromagnetic loops implanted in the road.

The data is produced by the Department of Roads and Travel - Service des Déplacements - Poste Central d'Exploitation Lutèce.

The data and associated visualizations (Table, Map and Dataviz) are raw without any interpretation or analysis. They show the data as it is published daily.

They give an overview of the occupancy rate and throughput on more than 3000 track sections. By themselves, they do not make it possible to characterize the complexity of traffic in Paris.

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Two types of data are thus elaborated:

the occupancy rate, which corresponds to the presence time of vehicles on the loop as a percentage of a fixed time interval (one hour for the data provided). Thus, a 25% occupancy rate over one hour means that vehicles have been present on the loop for 15 minutes. The rate provides information on road congestion. The layout of the loops is thought out in such a way as to be able to deduce, from a specific measurement, the state of the traffic on an arc.
bitrate is the number of vehicles that passed the counting point during a fixed time interval (one hour for the provided data).

The timestamp is performed at the end of the production period based on the Europe Time Zone Paris - Berlin UTC +1

For example, the timestamp "2019-01-01 01:00:00" denotes the period from January 1, 2019 at 00:00 to January 1, 2019 at 01:00.

Thus, the coupled observation at one point of the occupancy rate and the throughput makes it possible to characterize the traffic. This is one of the foundations of traffic engineering, and is referred to as the "fundamental diagram".

A flow can correspond to two traffic situations: fluid or saturated, hence the need for the occupancy rate. For example: over an hour, a flow of 100 vehicles per hour on a usually very busy axis can occur at night (fluid traffic) or during rush hour (saturated traffic).

Paris network equipment:

The main axes of the City of Paris are equipped with vehicle counting stations and measurement of the occupancy rate, for the purposes of both traffic regulation and public transport, d information to users (dissemination on the Sytadin site), and study.

There are two types of stations on the network: stations measuring the occupancy rate only, and stations both measuring the rate and counting vehicles.< /p>

The rate measurement stations are set up very regularly: they allow detailed knowledge of traffic conditions.

Debit stations are less numerous, and generally located between major intersections. Indeed, the flow is generally preserved on a section between two large intersections.

The repository:

The repository is available on this dataset Road count - Geographical reference with the following characteristics:

Encoding: UTF-8
Projection: EPSG:2154 (Lambert 93 – RGF93)

Attribute fields are: see data model below and attached notice.

Traffic data:

Attribute fields are: see data model below and attached notice.

To access the data download the attachments associated with this dataset below

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