Add summaries of OpenRail challenges

Author: cornelius

content/challenges/_index.md

@@ -65,7 +65,7 @@ This theme track invites the submission of challenges that address pioneering id
 - [Predictive Model for Energy Consumption Including Weather Effects]({{% relref "15-energy-consumption" %}})
 - [Route Roulette – A Playful Allocation Quest]({{% relref "16-route-roulette" %}})
 - [Rolling Stock Software Configuration Management]({{% relref "17-rolling-stock-config" %}})
-- [Infrastruction Congestion]({{% relref "18-infra-congestion" %}})
+- [Infrastructure Congestion]({{% relref "18-infra-congestion" %}})
 
 ### 6. Mobility and Logistics Think Tank 🔮🤖🔭
 

content/challenges/track-2/8-cross-border-mobility.md

@@ -6,13 +6,22 @@ banner:
     - "fill 1900x600"
 ---
 
-# Build an Open Model of Cross‑Border Mobility 
+# Build an Open Model of Cross‑Border Mobility
 
 ## Problem Statement
 
+Cross‑border travel demand is poorly understood and remains car‑centric. Open, reusable mobility models are largely missing.
+
 ## Proposed Solution
 
+Use open data to model cross‑border mobility and demonstrate rail‑based alternatives. The model serves as a reusable foundation for planning and policy analysis.
+
 ## Required Expert Profiles
 
+* Mobility and transport modelers
+* Data scientists
+* Python and open‑data specialists
+
 ## Company
-This is a challenge provided by *SNCF*
+
+This is a challenge provided by *SNCF*

content/challenges/track-5/17-rolling-stock-config.md

@@ -1,18 +1,28 @@
 ---
-title: Rolling Stock Software Configuration Management 
+title: Rolling Stock Software Configuration Management
 banner:
   image: images/events/Hack4Rail-Bern-2025_team.jpg
   processes:
     - "fill 1900x600"
 ---
 
-# Rolling Stock Software Configuration Management 
+# Rolling Stock Software Configuration Management
 
 ## Problem Statement
 
+Software configurations of rolling stock are managed using heterogeneous and outdated approaches. This creates risks regarding safety, cybersecurity, traceability, and long‑term maintainability.
+
 ## Proposed Solution
 
+Design a common configuration‑management concept for rolling stock software across operators. The focus lies on versioning, traceability, and alignment with safety‑critical railway requirements.
+
 ## Required Expert Profiles
 
+* Systems and rolling‑stock engineers
+* Software configuration management experts
+* Cybersecurity specialists
+* Safety and compliance professionals
+
 ## Company
-This is a challenge provided by *SNCF*
+
+This is a challenge provided by *SNCF*

content/challenges/track-5/18-infra-congestion.md

@@ -1,18 +1,27 @@
 ---
-title: Infrastruction congestion
+title: Infrastructure congestion
 banner:
   image: images/events/Hack4Rail-Bern-2025_team.jpg
   processes:
     - "fill 1900x600"
 ---
 
-# Infrastruction Congestion
+# Infrastructure Congestion
 
 ## Problem Statement
 
+Capacity conflicts in yards and network nodes are detected too late. Planning systems insufficiently integrate operational changes and real‑time constraints.
+
 ## Proposed Solution
 
+Develop decision‑support models that proactively identify congestion risks and propose mitigation scenarios. The focus is on earlier, better‑informed planning decisions.
+
 ## Required Expert Profiles
 
+* Capacity and yard planning experts
+* Optimization specialists
+* Process and systems analysts
+
 ## Company
-This is a challenge provided by *Infrabel*
+
+This is a challenge provided by *Infrabel*