Summary
Connected vehicles bring together intelligent systems operating on board with communications paths carrying emergency calls, remote-assistance requests, fleet alerts, software updates and operational data. Each function has different requirements for safety evidence, latency, coverage and resilience.
Download the second edition of CSL Group’s thought-leadership paper to explore how AI and machine learning are changing vehicle systems, how connectivity requirements differ between functions, and when access to multiple radio networks or independent operator cores is needed.
Managed connectivity at global scale
| CSL direct connections | IoTM SIM management | IoTM integrations | Mobile operator access |
|---|---|---|---|
| More than 3.5 million active, fully managed direct connections | More than 30 million SIMs under management and orchestration | 20+ native CMP, API and carrier platform integrations | More than 100 mobile operators through the IoTM Platform |
What the second edition covers
- Automation and assurance: How AI and machine learning are changing driving systems, and why evidence of safety must be assessed for each feature in the conditions where it will be used.
- Latency and coverage: How on-board functions differ from remote assistance, emergency calls and fleet reporting, and what Ofcom measurements and 3GPP requirements reveal about their communications needs.
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Core resilience: What multi-network access and independent operator cores each protect against, how switching works and what the alternative path must support.
- A practical closing checklist: Questions for vehicle manufacturers, telematics providers, fleet operators and roadside infrastructure teams.
Coverage across vehicle routes. Resilience across network disruptions.
Driving decisions are made on board by the driver or the driving system. Emergency calls, remote-assistance requests and fleet alerts, however, also rely on communications beyond the vehicle.
A multi-network SIM with a single roaming profile can access several radio networks, allowing the vehicle to use another available network when its current network has no coverage. Where a service must also remain available during an outage of the issuing operator’s core, CSL DualCore® architecture provides a second path through an independent operator core.
Independent core paths with local switching
CSL DualCore architecture provides two connectivity paths through independent operator cores. The equipment makes the switching decision locally, while private encrypted data routing is specified across both paths.
For compatible vehicle and fixed equipment, rSIM® technology combines two independent multi-network roaming profiles with on-SIM switching logic. For roadside cabinets and depots, CSL DualSIM® Routers can be configured to provide core independence.
The right configuration depends on how long the service can tolerate an interruption and which data or voice services the alternative path must carry. Next-generation eCall also depends on compatible support across the in-vehicle system, mobile network and emergency-service infrastructure. In the UK, the Department for Transport advises that NG eCall should not be relied upon in an emergency before 31 March 2027 while supporting telecoms infrastructure is upgraded.
Control fleet connectivity across operators and borders
The CSL IoTM Platform brings SIM subscriptions, eSIM profiles and integrations with carrier platforms into one management environment, supporting both multi-network SIMs and SIMs with rSIM technology. More than 30 million SIMs are already managed through the platform.
For fleets operating across borders, profile localisation can help meet local carrier requirements and permanent-roaming restrictions. CSL’s eSIM management is aligned with the GSMA SGP.32 specification, supporting profile changes as deployment needs evolve.
One managed service for vehicles and roadside infrastructure
CSL can bring together equipment, connectivity, provisioning, private routing, connection monitoring and support within a single managed service.
How regulation, safety assurance and connectivity come together
The paper examines the Automated Vehicles Act 2024, UN vehicle regulations, EU type approval and next-generation eCall. It also explains how functional safety, cyber security, software updates and AI assurance shape the evidence required for assisted and automated vehicle functions.
The closing checklist helps teams assess each function’s operating conditions, evidence, communications route, coverage, acceptable interruption and recovery requirements, including the services that any alternative path must support.
Download the white paper:
The Future of Telematics: The Roles of AI and ML in ADAS, EVs and AVs. Second edition, version 2.92.
Discuss your vehicle or roadside deployment:
