--- title: Speed cameras measure speed with radar or by timing a car between tw… — Car safety: brakes, seat belts and airbags · tree and pragmatics description: Speed cameras measure speed with radar or by timing a car between two points; a person hit at 20 mph is much less likely to be killed than at 30 mph, which is why there are 20 mph zones near schools. Who acts: Speed cameras, person hit, 30 mph. A sentence of the lesson «Car safety: brakes, seat belt --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/17/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / [Car safety: brakes, seat belts and air…](https://md.mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/) / 17 # Car safety: brakes, seat belts and airbags, sentence 17 Speed cameras measure speed with radar or by timing a car between two points; a person hit at 20 mph is much less likely to be killed than at 30 mph, which is why there are 20 mph zones near schools. **Who acts:** Speed cameras, person hit, 30 mph · **What happens:** measure, time, be, kill · **To what, where:** speed, car This is a sentence of the lesson «Car safety: brakes, seat belts and airbags» 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 (Speed cameras, person hit, 30 mph), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:technology:018-car-safety.lesson:17 # text = Speed cameras measure speed with radar or by timing a car between two points; a person hit at 20 mph is much less likely to be killed than at 30 mph, which is why there are 20 mph zones near schools. # source = school lesson (ours) # course = technology # lesson = 018-car-safety.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 ×1, R8-pos-agree ×1 1 Speed speed NOUN NN Number=Sing 2 compound _ _ 2 cameras camera NOUN NNS Number=Plur 3 nsubj _ _ 3 measure measure VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ Agree=R8-pos-agree|Haiku=0:root|HaikuPos=VERB:VB:Mood=Imp|VerbForm=Fin 4 speed speed NOUN NN Number=Sing 3 obj _ _ 5 with with ADP IN _ 6 case _ _ 6 radar radar NOUN NN Number=Sing 3 obl _ _ 7 or or CCONJ CC _ 9 cc _ _ 8 by by SCONJ IN _ 9 mark _ _ 9 timing time VERB VBG Tense=Pres|VerbForm=Part 6 conj _ _ 10 a a DET DT Definite=Ind|PronType=Art 11 det _ _ 11 car car NOUN NN Number=Sing 9 obj _ _ 12 between between ADP IN _ 14 case _ _ 13 two two NUM CD NumForm=Word|NumType=Card 14 nummod _ _ 14 points point NOUN NNS Number=Plur 9 obl _ _ 15 ; ; PUNCT , _ 3 punct _ _ 16 a a DET DT Definite=Ind|PronType=Art 17 det _ Agree=R5-strong|Haiku=18:det 17 person person NOUN NN Number=Sing 18 compound _ _ 18 hit hit NOUN NN Number=Sing 25 nsubj _ _ 19 at at ADP IN _ 21 case _ _ 20 20 20 NUM CD NumForm=Digit|NumType=Card 21 nummod _ _ 21 mph mph NOUN NN Number=Sing 18 obl _ Agree=R7-rel-agree|Haiku=18:nmod 22 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 25 cop _ _ 23 much much ADV RB _ 24 advmod _ _ 24 less less ADV RBR Degree=Cmp 25 advmod _ _ 25 likely likely ADJ JJ Degree=Pos 3 parataxis _ _ 26 to to PART TO _ 28 mark _ _ 27 be be AUX VB VerbForm=Inf 28 aux:pass _ _ 28 killed kill VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 25 xcomp _ _ 29 than than ADP IN _ 32 case _ _ 30 at at ADP IN _ 32 case _ _ 31 30 30 NUM CD NumForm=Digit|NumType=Card 32 nummod _ _ 32 mph mph NOUN NN Number=Sing 28 obl _ _ 33 , , PUNCT , _ 36 punct _ _ 34 which which PRON WDT PronType=Rel 36 nsubj _ _ 35 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 36 cop _ _ 36 why why ADV WRB PronType=Int 32 nmod _ _ 37 there there PRON EX PronType=Dem 38 expl _ _ 38 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 36 advcl:relcl _ _ 39 20 20 NUM CD NumForm=Digit|NumType=Card 41 nummod _ _ 40 mph mph NOUN NN Number=Sing 41 compound _ _ 41 zones zone NOUN NNS Number=Plur 38 nsubj _ _ 42 near near ADP IN _ 43 case _ _ 43 schools school NOUN NNS Number=Plur 41 nmod _ _ 44 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **measure** | present | Speed cameras | speed | | | | with radar | vn register-54.1-2-1 «NP V NP.value»: agent=Theme speed=Value | | 2 | **time** | gerund | Speed cameras *not said here* | a car | | | | between two points | vn register-54.1-2 «NP V NP»: agent=Agent car=Theme | | 3 | **is** | present | person hit | | | | | less, likely *property* | tree rules | | 4 | **kill** | to-infinitive · passive | person hit *not said here* | | | | | than 30 mph | vn amuse-31.1 «NP V ADV-Middle» | | 5 | **is** | present | 30 mph | | | | | why *property* | tree rules | 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. **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:018-car-safety.lesson:17`. **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 ×1, 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/). - ← previous: [Car safety: brakes, seat belts and air…, 16](https://md.mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/16/) - next →: [Car safety: brakes, seat belts and air…, 18](https://md.mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/18/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/)