Smart Mobility and MaaS
China has more than 430 million motor vehicles, and new-energy vehicle penetration is above 30%. Smart mobility covers shared mobility, ride-hailing, hourly car rental, shared bikes, e-scooters, smart parking, and vehicle-road coordination. MaaS (Mobility as a Service) puts those modes on one platform so a rider can plan a trip and pay for it in a single place. IoT is what ties the vehicle, the charging pile, the parking bay, and the roadside device together: live status, location, remote fault diagnosis, and a dispatch plan that can actually move the fleet.
Market Size and Growth
The shared-mobility market is above RMB 300 billion, and ride-hailing, shared bikes, and hourly rental are still growing. The electric-vehicle fleet is above 20 million, and chargers and battery-swap stations are being built out quickly. Smart parking is a market above RMB 50 billion. Vehicle-road coordination and autonomous-driving pilots are adding demand for roadside units (RSU) and onboard units (OBU). C-V2X runs in two modes, PC5 direct link and Uu over the cellular network. Most chargers built to the national standard are AC 7 kW or DC 60–120 kW. Onboard positioning is usually within 5 m, using GPS and BeiDou.
Policy and Standards
The New Energy Vehicle Industry Development Plan pushes charging infrastructure and connected vehicles. The rules on road testing and demonstration of intelligent connected vehicles set how autonomous-driving trials are run. Charging piles have to meet GB/T 34657. Vehicle-road coordination uses C-V2X and 5G. Trip data has to meet privacy and data-security rules.
What Still Breaks in Daily Operations
Vehicles are scattered, and dispatch is slow
Shared cars and hourly-rental cars sit all over a city. Sending someone to move them is expensive and slow. An onboard terminal reports location, state of charge, and faults as they change, so the operations platform can lock a car remotely and diagnose it without a visit. A dispatch algorithm then places cars where demand actually is.
Chargers and parking bays do not share a picture
Drivers lose time hunting for a free charging pile or a free bay. Once piles and car parks are on the network, idle, occupied, and faulted states reach the platform, and the app can search, reserve, and navigate. The operator watches the pile from the office and deals with a fault when it appears, not on the next patrol.
Roadside gear fails between patrols
Smart lamp posts, RSUs, and electronic bus stops are spread along the road, and a fault usually waits for someone to walk the route. A device-management platform watches whether each unit is online and what it is reporting, and opens a work order when something looks wrong, so vehicle-road coordination and the rest of the traffic service stay up.
Where IoT Is Used
Shared vehicles on the network
Shared cars and e-scooters carry a terminal that reports location, state of charge, lock state, and fault codes over 4G/5G. The platform can lock the vehicle, honk so the rider can find it, draw a geofence, and enforce no-parking zones. A faulty vehicle is flagged and left out of the next dispatch.
Charging piles and parking bays
A charging pile reports idle or occupied, charging power, and faults, and that feed goes to aggregator platforms and navigation apps. Geomagnetic sensors and cameras see which bays are free, and a guidance screen or the app points the driver in. Frictionless payment and reserved charging shorten the stop.
Vehicle-road coordination
RSUs and roadside sensors sit on fiber or 5G and push signal state, road conditions, and incidents to the vehicle. A smart lamp post combines lighting, cameras, environmental sensing, and charging, with one IoT gateway carrying all of those services for the city.
Who Builds It, and Where It Has Run
The chain: upstream, makers of onboard terminals, charging piles, RSUs, and OBUs; in the middle, mobility platforms, connected-vehicle platforms, and parking platforms; downstream, shared-mobility operators, charging operators, and municipal transport. One shared-car operator put 8,000 onboard terminals on 4G. Dispatch efficiency rose 40%, and the time to pick out a faulty car fell from 2 hours to 10 minutes. One city tied in 12,000 geomagnetic sensors. Vacant-bay accuracy reached 98%, and the average hunt for a space fell from 12 minutes to 3 minutes.
Terms
MaaS: Mobility as a Service, one platform for planning and paying a trip. RSU: roadside unit, the equipment at the curb for vehicle-road coordination. OBU: onboard unit. C-V2X: cellular vehicle-to-everything.
Where the Market Is Heading
Autonomous-driving and vehicle-road pilots are widening. Shared mobility is being tied more tightly to public transport. Carbon peaking and carbon neutrality are pushing electrification and lower-carbon trips. SimtoLink supplies 4G/5G IoT connectivity so vehicle terminals, charging piles, and roadside devices stay online.
Summary
Smart mobility uses IoT to put vehicles online, to line up charging and parking, and to maintain roadside equipment, so trips take less time and riders have a clearer picture. SimtoLink keeps those devices on a stable connection for MaaS and for smart transport.