LOTI report on the A89—A6 link

Commissioned in 2013, the A89—A6 connection has completed a strategic link in the national highway network, by improving the continuity of exchanges between south-western and central-eastern France.
Ten years later, Explain was responsible for drawing up the socio-economic and territorial assessment of the project, making it possible to measure the concrete results in relation to the initial forecasts.

The mission was structured according to the official methodology of LOTI balance sheet, in four main sections:

1. Analysis of the initial situation and the objectives of the project
   • Study of traffic conditions before commissioning (traffic, congestion, accidents).
   • Reconstitution of the hypotheses used in the ex ante evaluation.
2. Measuring observed effects
   • Analysis of real traffic, traffic reports and modal distribution.
   • Assessment of savings in time, safety and comfort.
   • Estimation of economic and environmental impacts.
3. Comparison between forecasts and achievements
   • Comparison between traffic hypotheses and observed data.
   • Analysis of differences and explanatory factors (economic growth, logistical uses, evolution of transport costs).
4. Summary and lessons
   • Overall socio-economic and financial performance report.
   • Identification of useful lessons for the future planning of highway projects.

Explain's approach ensured the neutrality and robustness of the balance sheet, while presenting the results in a clear and usable manner for the contracting authority and the State services.

‍

The mission aimed to assess the relevance and real performance of the project, ten years after its commissioning.
The specific objectives were to:

• Check the consistency between observed results and initial forecasts ;
• Quantifying the socioeconomic benefits actually produced ;
• Identify the sustainable territorial and environmental impacts ;
• Capitalize methodological lessons for future infrastructure projects.

‍

The LOTI balance sheet led by Explain provided to APRR one comprehensive and structured feedback, facilitating communication with licensing authorities and public partners.
The study made it possible to highlight the significant time and safety savings generated by the link, as well as local economic benefits.
She also highlighted the levers for improvement in forecasting demand and managing environmental effects.

‍

EXPLAIN, an independent firm, provides recognized expertise in socio-economic assessments and transport modeling for complex projects. His team, led by project manager Aline Bagland and under the quality control of Alexandre Bréèrette (managing director, expert at the SGPI), has a perfect command of the regulatory framework for LOTI balance sheets. With numerous references of ex-post studies (LGV SEA, T1 Nîmes) and ex-ante studies, Explain guarantees a rigorous methodology based on advanced tools. His in-depth knowledge of the Lyon territory, resulting from previous interventions on the M6-M7 and the ZFE, is a major asset. This combination ensures reliable, objective and educational analyses for APRR.