GuilhemMariotte


PhD Student-Civil Engineer

Publications

Mariotte, G., Leclercq, L., & Laval, J. A., 2017. Macroscopic urban models: Analytical and numerical investigations of existing models. Transportation Research Part B: Methodological, 101:245–267, doi:10.1016/j.trb.2017.04.002
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> Graphical abstract (.pdf)
Leclercq, L., Sénécat, A., & Mariotte, G., 2017. Dynamic macroscopic simulation of on-street parking search: a trip-based approach. Transportation Research Part B: Methodological, 101:268–282, doi:10.1016/j.trb.2017.04.004
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Conference presentations

07–11.01.2018 O Mariotte, G.O, & Leclercq, L., MFD-based simulation: Spillbacks in multi-reservoir networks
TRB 97th Annual Meeting 2018, Washington DC, USA
11–14.09.2017 O Mariotte, G.O, & Leclercq, L., The MFD trip-based approach applied to multi-reservoir systems
hEART 6th Symposium 2017, Haifa, Israel
08–12.01.2017 O Mariotte, G.O, Leclercq, L., & Laval, J. A., Dual expression of macroscopic urban models: Analytical and numerical investigations
TRB 96th Annual Meeting 2017, Washington DC, USA
O Senecat, A., Leclercq, L.P, & Mariotte, G., Macroscopic simulation of on-street parking search: a trip-based approach
TRB 96th Annual Meeting 2017, Washington DC, USA
13–16.09.2016 O Mariotte, G.P & Leclercq, L., Impact of the local demand-supply perimeter distribution and the internal reservoir trip length on MFD-based traffic simulation
hEART 5th Symposium 2016, Delft, the Netherlands
02–03.07.2016 O Mariotte, G. & Leclercq, L.O, Impact of the local demand-supply perimeter distribution and the internal reservoir trip length on MFD-based traffic simulation
TFT Summer Meeting 2016, Sydney, Australia

(Superscript O for oral presentation, P for poster presentation)

Ressources

Modeling of traffic flow within a given urban area. This first approach, also called the "bathtub model", is based on the Macroscopic Fundamental Diagram (Outflow-MFD) which relates the vehicle exit rate to the accumulation inside the zone (number of circulating vehicles). We also denote it the "accumulation-based" approach.

Situation 1 : free-flow conditions for the whole urban area

Situation 2 : congested conditions due to a restriction on the outflow


This second representation concentrates more particularly on the distance that the vehicles have to travel in the area. It is based on the Macroscopic Fundamental Diagram (Speed-MFD) which relates the global mean speed to the accumulation inside the zone. We also call it the "trip-based" approach.

Situation 1 : free-flow conditions for the whole urban area

Situation 2 : congested conditions due to a restriction on the outflow


Example of a simulation on the network of Lyon 6th district with several zones. Traffic conditions are considered homogeneous in each zone. Traffic flow is described by the second above-mentioned modeling approach. The demand scenario creates flows from North to South that interact with flows from East to West.

Lyon 6 network split into 8 zones

schema

Simulation results: evolution of the number of vehicles in each zone, comparison between two demand scenarios