---
title: A self-driving car uses cameras, radar and lidar to scan around it,… — Self-driving cars and machines that run themselves · tree and pragmatics
description: A self-driving car uses cameras, radar and lidar to scan around it, and a computer decides how to steer, brake and speed up; robotaxis without a driver already carry passengers in some American and Chinese cities. Who acts: driving car, computer, robotaxis. A sentence of the lesson «Self-driving car
---

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# Self-driving cars and machines that run themselves, sentence 11

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A self-driving car uses cameras, radar and lidar to scan around it, and a computer decides how to steer, brake and speed up; robotaxis without a driver already carry passengers in some American and Chinese cities.

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**Who acts:** driving car, computer, robotaxis · **What happens:** drive, use, scan, decide, steer, brake · **To what, where:** cameras, car, passengers, American cities

<!-- .vabout -->
This is a sentence of the lesson «Self-driving cars and machines that run themselves» of the technology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (driving car, computer, robotaxis), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:040-self-driving-cars-and-machines-that-run-themselves.lesson:11
# text = A self-driving car uses cameras, radar and lidar to scan around it, and a computer decides how to steer, brake and speed up; robotaxis without a driver already carry passengers in some American and Chinese cities.
# source = school lesson (ours)
# course = technology
# lesson = 040-self-driving-cars-and-machines-that-run-themselves.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×2, R8-pos-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
2	self	self	NOUN	NN	Number=Sing	4	compound	_	_
3	-	-	PUNCT	HYPH	_	2	punct	_	_
4	driving	drive	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	car	car	NOUN	NN	Number=Sing	6	nsubj	_	_
6	uses	use	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	cameras	camera	NOUN	NNS	Number=Plur	6	obj	_	_
8	,	,	PUNCT	,	_	9	punct	_	_
9	radar	radar	NOUN	NN	Number=Sing	7	conj	_	Agree=R7-rel-agree|Haiku=7:appos
10	and	and	CCONJ	CC	_	11	cc	_	_
11	lidar	lidar	NOUN	NN	Number=Sing	9	conj	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	scan	scan	VERB	VB	VerbForm=Inf	6	advcl	_	Agree=R5-strong|Haiku=11:acl
14	around	around	ADP	IN	_	15	case	_	_
15	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	13	obl	_	_
16	,	,	PUNCT	,	_	20	punct	_	_
17	and	and	CCONJ	CC	_	20	cc	_	_
18	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
19	computer	computer	NOUN	NN	Number=Sing	20	nsubj	_	_
20	decides	decide	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
21	how	how	ADV	WRB	PronType=Int	23	advmod	_	_
22	to	to	PART	TO	_	23	mark	_	_
23	steer	steer	VERB	VB	VerbForm=Inf	20	xcomp	_	_
24	,	,	PUNCT	,	_	25	punct	_	_
25	brake	brake	VERB	VB	VerbForm=Inf	23	conj	_	Agree=R7-rel-agree|Haiku=23:xcomp
26	and	and	CCONJ	CC	_	27	cc	_	_
27	speed	speed	VERB	VB	VerbForm=Inf	25	conj	_	_
28	up	up	ADP	RP	_	27	compound:prt	_	_
29	;	;	PUNCT	,	_	30	punct	_	_
30	robotaxis	robotaxis	NOUN	NNS	Number=Plur	35	nsubj	_	Agree=R8-pos-agree|Haiku=35:nsubj|HaikuPos=NOUN:NN:Number=Sing
31	without	without	ADP	IN	_	33	case	_	_
32	a	a	DET	DT	Definite=Ind|PronType=Art	33	det	_	_
33	driver	driver	NOUN	NN	Number=Sing	30	nmod	_	_
34	already	already	ADV	RB	_	35	advmod	_	_
35	carry	carry	VERB	VBP	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	parataxis	_	_
36	passengers	passenger	NOUN	NNS	Number=Plur	35	obj	_	_
37	in	in	ADP	IN	_	42	case	_	_
38	some	some	DET	DT	PronType=Ind	42	det	_	_
39	American	American	ADJ	JJ	Degree=Pos	42	amod	_	_
40	and	and	CCONJ	CC	_	41	cc	_	_
41	Chinese	Chinese	ADJ	JJ	Degree=Pos	39	conj	_	_
42	cities	city	NOUN	NNS	Number=Plur	35	obl	_	_
43	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drive** | gerund |  |  |  |  |  |  | vn nonvehicle-51.4.2-1 «NP.agent V»: agent=Agent |
| 2 | **use** | present | a driving car | cameras and radar and lidar |  |  |  |  | vn eat-39.1 «NP V NP»: agent=Agent camera=Patient |
| 3 | **scan** | to-infinitive | a driving car *not said here* |  |  | car |  |  | vn assessment-34.1 «NP V NP»: agent=Agent |
| 4 | **decide** | present | a computer |  |  |  |  |  | vn correspond-36.1-1 «NP V what S\_INF»: agent=Agent clause=Topic |
| 5 | **steer** *not said to happen* | to-infinitive | a computer *not said here* |  |  |  |  |  | vn accompany-51.7 «NP V NP»: agent=Agent |
| 6 | **brake** | infinitive | a computer *not said here* |  |  |  |  |  | tree rules |
| 7 | **speed up** | infinitive | a computer *not said here* |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 8 | **carry** | present | robotaxis without a driver | passengers |  | some American cities |  |  | vn fit-54.3 «NP V NP PP.location»: agent=Agent passenger=Value in city=Location |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:technology:040-self-driving-cars-and-machines-that-run-themselves.lesson:11`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×2, R8-pos-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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