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arXiv · 2607.00944

Influence of Routing and Speed Limits on Optimal Solutions in Traffic Emission Modeling

Marc-André Bach·Simone Göttlich·Alena Ulke
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Abstract

We investigate the influence of routing strategies and speed limit policies on optimal solutions in traffic emission models. Building on a first-order macroscopic traffic model coupled with an advection-diffusion model, we formulate single- and multi-objective optimization problems to simultaneously maximize traffic efficiency and minimize air pollution. We compare three control scenarios: optimizing only the routing strategy, optimizing only the speed limit policy, and optimizing both simultaneously. Numerical experiments on a small road network demonstrate that speed limit policies consistently achieve larger reductions in emissions and greater gains in traffic efficiency than routing strategies. Multi-objective optimization reveals the trade-off between the two goals and confirms that including speed limits in the control set yields Pareto-optimal solutions that are strictly superior to those obtained by routing control only. Our results provide quantitative guidance for traffic management seeking to balance mobility and environmental objectives.

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Marc-André Bach, Simone Göttlich, Alena Ulke. 2026-07-01. Influence of Routing and Speed Limits on Optimal Solutions in Traffic Emission Modeling. https://arxiv.org/abs/2607.00944

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