Explain like I'm five · Network

What is V2X Vehicle Communication?

V2X, told as a story about trucks exchanging real-time notes with other trucks, signals, and people to avoid accidents.

the truck ahead brakes hard, but the one behind has no ideaeach truck only sees the road right in front of it

The truck ahead brakes hard, but the one behind has no idea.Each truck only sees the road right in front of it.

signalthe truck, the signal, and the person all say nothing to each otherwhen the truck, signal, and person move unaware of each other, dangerous moments arise

The signal and the person both act without regard for the truck.When the truck, signal, and person move unaware of each other, dangerous moments arise.

signalV2X = trucks exchanging real-time notes with other trucks, signals, and peoplea note like 'braking hard!' arrives in the blink of an eye

V2X = trucks exchanging notes with each other, signals, and people.A note like 'braking hard!' arrives in the blink of an eye.

V2Vtruck to truck, sharing braking and speed instantly
V2Inotes with signals and other infrastructure
V2Ptruck and pedestrian alert each other when close
V2Nnotes with the whole network
WHO DOES THE TRUCK TALK TOV2V — truck to truck, sharing braking and speed instantlyV2I — truck to infrastructure like signals, knowing timing aheadV2P — truck to pedestrian, alerting each other when closeV2N — truck to the whole network, getting info from far away

The name changes depending on who the truck talks to.Truck-to-truck, to infrastructure, to people, and to the whole network — four directions.

when both trucks can use the note, accidents dropif even one side can't, the note is uselessfar from a fixed post office, like a highway, trucks may link directly instead

V2X only works when the truck, the signal, and the person can all use the note.Far from a fixed post office, trucks may link directly instead.

In one breath

V2X = vehicles exchanging real-time notes with other vehicles, traffic infrastructure, pedestrians, and the network to share what's happening.

V2X (Vehicle-to-Everything) lets vehicles exchange low-latency information with other vehicles (V2V), traffic infrastructure (V2I), pedestrians (V2P), and the network (V2N), either directly or via a network. It shares data like hard braking, signal timing, and pedestrian location in real time to reduce accidents, and runs on radio technologies such as DSRC/WAVE (IEEE 802.11p) or C-V2X (LTE/5G-based); ad-hoc multi-hop links between vehicles are studied too.

When grown-ups say it

V2V
The note trucks pass directly to each other. Shares braking and speed information.
V2I
The note exchanged with infrastructure like signals. Lets a vehicle know signal timing in advance.
V2P
The note exchanged with a pedestrian. Alerts both sides when they get close.
V2N
The note exchanged with the whole network. Reaches information from well beyond what's nearby.
Low Latency (URLLC)
The instant lane reserved for emergencies. A low-latency technology that V2X over a 5G network can use. → the network with a lane for every need
Ad-hoc Routing
How carriers find the way among themselves, with no fixed post office. How trucks link up directly, far from fixed infrastructure. → how carriers find the way among themselves
AMI
The network where meters report readings automatically. A similar example of things auto-reporting to each other. → the network where meters mail their own readings
Autonomous Sensors
The device by which a truck sees only the road right ahead. V2X complements this by covering what the truck's own eyes can't see.
Next story
A Dedicated Road, or Splitting It Into Pieces →
Want another term as a picture book? Request →