IiNkqubo ze-Thrie Beam Guardrail: Uhlalutyo oluBanzi lobuNgcali (uHlelo luka-2025)

1. intshayelelo

The Thrie Beam Guardrail System luphawu olomeleleyo lokhuseleko ecaleni kwendlela eyilelwe ukomeleza isiqulatho sesithuthi kunye nefuthe lokufunxa. Ngoyilo olukhethekileyo kunye nesakhiwo esomeleziweyo, inkqubo ye-Thrie Beam isebenza ngokukodwa kwiimeko zesantya esiphezulu kunye nefuthe eliphezulu. Le ngxelo ibonelela ngohlalutyo olubanzi lobuchwephesha lwenkqubo ye-Thrie Beam guardrail, equka iinkcukacha zayo zobugcisa, iimetriki zokusebenza, iinkqubo zofakelo, kunye nezinto ezintsha ezizayo. Injongo yethu kukuxhobisa amagcisa okhuseleko ezindleleni ngokuqonda ngokucokisekileyo iinzuzo zenkqubo, imida, kunye namathemba ophuculo lwexesha elizayo.

2. IiNgcaciso zobuGcisa kunye neMigaqo yoYilo

2.1 Iprofayili ye-Thrie Beam

I-Thrie Beam guardrail yahlulwe ngayo uyilo lwemiqadi emithathu, enika amandla okongeziweyo kunye nokuchasana kwempembelelo xa kuthelekiswa neenkqubo ze-W-Beam zendabuko.

amacala: I-Thrie Beam inobude be-510 mm kunye nobunzulu be-80 mm, inika amandla amakhulu okubamba kunye nokuchasana kwempembelelo.
imathiriyeli: Yakhiwe ukusuka kwintsimbi ephezulu yokuqina, iqinisekisa ukuhlala kunye nokuchasana neemeko ezinzima zokusingqongileyo.
- Unikeze Amandla: 345-450 MPa.
- Okomeleleyo kuQinisekisa ukuBamba: 483-620 MPa.
ubungqingqwa: Ngokuqhelekileyo i-3.42 mm (i-10 gauge), inika amandla aphuculweyo kunye nokuchasana nokuguqulwa.
Ubunzima beGalvanization: Intsimbi igqunywe nge-galvanization yediphu eshushu, kunye nobukhulu obuqhelekileyo obuyi-610 g/m² ukwenzela ukhuseleko lomhlwa oluhlala ixesha elide.

Izinto zeNkqubo ezi-2.2

Inkqubo ye-Thrie Beam ibandakanya izinto ezininzi ezibalulekileyo ezinegalelo ekusebenzeni kwayo ekufunxeni amandla kunye nokuqulatha isithuthi:

izithuba: Ifumaneka kwimithi okanye ngentsimbi, izithuba zenkxaso kunye ne-anchor i-guardrail, ukuhambisa impembelelo yempembelelo emhlabeni.
- Izithuba zomthi: Ngokuqhelekileyo yi-150 mm x 200 mm.
- Izithuba zentsimbi: Amaxesha amaninzi i-I-beam okanye i-C-channel profiles, inika amandla ongezelelweyo.
Izithintelo: Izikhewu ezigcina umphakamo kaloliwe kwaye zibe negalelo ekufunxeni kwamandla ngexesha leempembelelo.
Izahlulo zikaloliwe: Amacandelo e-Thrie Beam axhunyiwe ngokusebenzisa iibholiti, ukuqinisekisa ukuqhubeka nokuzinza.
Phelisa izikhululo: Amacandelo akhethekileyo afakwe ekupheleni kwe-guardrail ukuqondisa kwakhona okanye ukunciphisa izithuthi ngokukhuselekileyo.
Isithuba sePost: Ngokuqhelekileyo izithuba ezi-2.0 zeemitha (6.6 iinyawo) ngaphandle, nangona oku kunokulungiswa ngokusekelwe kwiimfuno zendlela ethile.

2.3 Ukuqwalaselwa kwezinto eziphathekayo

I-Thrie Beam guardrails zenziwa ngentsimbi, eyaziwa ngayo amandla kunye nokumelana nemiba yokusingqongileyo. Ukwaleka okongeziweyo kunokufakwa kwiindawo eziselunxwemeni okanye imimandla enetyuwa eninzi ukomeleza ngakumbi ukuqina.

3. Uhlalutyo lweNtsebenzo

3.1 Inkqubo yokufunxa amandla

Inkqubo yeThrie Beam guardrail iyagqwesa ekufunxeni amandla ngokudityaniswa kwezinto zoyilo:

Beam Deformation: Iprofayili yemitha emithathu ivumela ukuguqulwa okubalulekileyo ngexesha leempembelelo, ukufunxa amandla ngelixa igcina imfezeko yesakhiwo.
Ukunikezela ngePosi: Izithuba zenzelwe ukuvelisa phantsi kwempembelelo ephezulu, ukunciphisa ukothuka okudluliselwe kwisithuthi.
Kaloliwe Tensioning: Uxinzelelo oluqhubekayo kumzila kaloliwe lunceda ukukhokela isithuthi ecaleni kwendlela yokugada, ukunciphisa umngcipheko wokuba siyishiye indlela.
Uxinzelelo lweBlockout: I-blockouts icinezela impembelelo, iyancipha ngakumbi amandla adluliselwe kwizithuba.

Izifundo zakutsha nje, ezifana nezo zikaZhang et al. (2024), baye babonisa ukuba i-Thrie Beam guardrails inokufunxa ukuya kuthi ga kwi-70 kJ yamandla e-kinetic ngexesha longquzulwano olubandakanya isithuthi esiqhelekileyo somkhweli.

3.2 INdlela yoKhuseleko

I-Thrie Beam guardrails idibana nezatifikethi ezininzi ezingqongqo zokhuseleko, kubandakanya:

Isiqinisekiso se-MASH TL-4: Ezi nkqubo ziyakwazi ukuqulatha kunye nokuthumela kwakhona izithuthi ukuya kwi-2,722 kg (6,000 lbs) ehamba nge-100 km / h kunye ne-25-degree angle impact.
EN1317 N3 iNqanaba lokuGcina: Ibonisa ukuba i-Thrie Beam guardrails ingaba nezithuthi ukuya kwi-2,000 kg ngesantya se-110 km / h kunye ne-20-degree angle impact.

Ngokutsho Federal Highway Administration (2024), I-Thrie Beam guardrails inokunciphisa ubunzima bokuphahlazeka nge-50-60% xa ifakwe ngokufanelekileyo.

4. Ufakelo kunye noLondolozo

4.1 Inkqubo yoFakelo

Ukusebenza kweThrie Beam guardrails kuxhomekeke kufakelo oluchanekileyo:

Ukulungiselela indawo: Ukuhlelwa ngokufanelekileyo kunye nokuxinana komhlaba kubalulekile kuzinzo.
Ukufakwa kweposi: Izithuba ziqhutyelwa emhlabeni okanye zibekwe kwimingxuma esele igrunjwe ngaphambili, ngokusekelwe kwiimeko zomhlaba kunye nohlobo lweposi.
URail Mounting: I-guardrail ikhuselwe kwizithuba usebenzisa i-blockouts, iqinisekisa ukuba ibekwe kumphakamo ochanekileyo ukuze usebenze ngokufanelekileyo.
Phelisa uFakelo lweSiteshi: Ibalulekile ekuthotyweni kwesithuthi esisebenzayo okanye ukuhanjiswa kwenye indawo ekupheleni kwenkqubo.

Ngokutsho Inkqubo yoPhando ngoNdlela weSizwe weNtsebenziswano, Iqela lingafaka ngokuqhelekileyo phakathi kwe-200 kunye ne-300 yeemitha ze-Thrie Beam guardrail ngosuku phantsi kweemeko eziqhelekileyo.

4.2 IiMfuno zoLondolozo

Ukugcinwa rhoqo kubalulekile ukuqinisekisa ukusebenza ngokuqhubekayo:

Ulungelelwaniso lukaloliwe: Ukuqinisekisa ukuba umzila kaloliwe uhlala ulungelelaniswe ngokuchanekileyo kwaye ukhululekile kuguquko.
Thumela Imfezeko: Ukuhlola izithuba zomonakalo okanye ukubola, ngakumbi izithuba zokhuni.
Imeko yeSplice: Ukuqinisekisa ukuba amaqhekeza ahlala ekhuselekile kwaye esebenza.
UHlolo lokuTyakala: Ukuhlola rhoqo irusi okanye umhlwa, ngakumbi kwiindawo eziselunxwemeni okanye kwimizi-mveliso.

A uhlalutyo lomjikelo wobomi liSebe lezoThutho laseTexas (2024) libonisa ukuba ngokugcinwa okufanelekileyo, i-Thrie Beam guardrails ingaba nobomi benkonzo ukuya kwi-30 iminyaka.

5. Uhlalutyo lokuthelekisa

uphawu	I-Thrie Beam Guardrail	W-Beam Guardrail	Umqobo weConcrete	Umqobo weCable
Iindleko zokuqala	$$$	$$	$$$$	$
Iindleko zoLondolozo	$$	$$	$	$$$
Ukufunxwa kwamandla	phezulu	phakathi	low	phezulu
Ixesha lokufaka	phakathi	phakathi	phezulu	low
Ukufaneleka kweeCurves	phakathi	phezulu	KuNcinci	Zintle
Ukonakala kwesithuthi (Isantya esiphantsi)	low	Phakathi	phezulu	low

Olu thelekiso luqaqambisa ukufunxwa kwamandla aphezulu e-Thrie Beam kunye nesakhono sokuqulatha isithuthi xa kuthelekiswa nezinye iinkqubo, nangona kusenokubandakanya iindleko eziphezulu zokuqala.

6. Uhlalutyo lwezoQoqosho

6.1 Uhlalutyo lweendleko zoMjikelo woBomi

Ii-guardrails ze-Thrie Beam zibonelela ngexabiso elisebenzayo ngexesha lokuphila kwabo:

Ukufakwa kokuqala: Iindleko eziphezulu zangaphambili xa kuthelekiswa neenkqubo ze-W-Beam kodwa zinikeza ukusebenza okuphuculweyo.
Iindleko zesondlo: Ukuthelekiswa neenkqubo ze-W-Beam, kunye noyilo lweemodyuli ezincedisa ukulungiswa kweendleko.
Ubomi benkonzo: Ngokugcinwa okufanelekileyo, iinkqubo ze-Thrie Beam zingahlala phakathi kwe-25 kunye ne-30 iminyaka.

A Ucwaningo lwe-2024 liSebe lezoThutho laseTexas lafumanisa ukuba ufakelo lwe-Thrie Beam lune inzuzo-yeendleko zesi-6:1, ebonisa ixabiso layo eliphezulu kutyalo-mali.

6.2 Impembelelo yoLuntu

Ukuncitshiswa koKufa: Iinkqubo ze-Thrie Beam zenza igalelo ekunciphiseni ukufa kwe-run-off-road ukuya kuma-40%, ukubonelela ngeenzuzo ezibalulekileyo zokhuseleko.
Ukunciphisa Ukwenzakala Okumandundu: Inkqubo inikezela ngokuncipha kwe-30% kumonzakalo omandundu, ukuguqulela kulondolozo loluntu malunga ne-600,000 yeedola ngemayile kwithuba leminyaka engama-25.

7. Unyino kunye nokuqwalaselwa

Ngelixa i-Thrie Beam guardrail ibonelela ngeenzuzo ezinkulu zokhuseleko, inemida:

Ukungqubana kwe-Engle ephezulu: Isenokungasebenzi ngokugqibeleleyo kungquzulwano olukwi-engile ephezulu kakhulu, apho eminye imiqobo inokufaneleka ngakumbi.
Iimoto ezinzima: Ayisebenzi kangako kwiilori okanye iibhasi ezinkulu kakhulu xa kuthelekiswa nezinye iinkqubo.
UkuFakelo Complexity: Ufakelo lunokuba nzima kwaye ludle ixesha xa kuthelekiswa neenkqubo ezilula zokugada.
ixabiso: Iindleko eziphezulu zokuqala zinokuthathelwa ingqalelo kwiiprojekthi ezinyanzeleke kuhlahlo lwabiwo-mali.

8. Uphuhliso lwexesha elizayo kunye nezikhokelo zoPhando

8.1 Izinto ezintsha ezintsha

Inkqubela phambili kwisayensi yezinto ivula indlela yokuphuculwa kwexesha elizayo kwiinkqubo zokugada i-Thrie Beam:

Iintsimbi eziphucukileyo: Ukuphuhliswa kweentsimbi zesizukulwana esilandelayo ezinomlinganiselo ophezulu wamandla ukuya kubunzima.
Izinto eziyinxalenye: Uphando kwi-fiber-reinforced polymers (FRP) ukwenzela ukuxhathisa okungcono kwe-corrosion kunye nokufunxa amandla. Uphononongo lubonisa ukuba i-FRP inokuphucula ukusebenza ngempembelelo ukuya kuthi ga kwi-25%.

8.2 IiTekhnoloji ze-Smart

Iitekhnoloji ezivelayo zisetelwe ukuphucula iinkqubo ze-Thrie Beam:

Iinzwa ezizinzisiweyo: Ukufunyaniswa kwempembelelo yexesha lokwenyani kunye nokubeka iliso kulwakhiwo lwempilo ukulungiselela ulondolozo olusebenzayo.
Ukukhanyisa kunye nokuReflectivity: Ukuphuculwa kokubonakala ngokukhanya okukhanyayo okanye iintsimbi zokukhusela ukhuseleko olungcono kwiimeko zokukhanya okuphantsi.
Ukudityaniswa kweSithuthi esiQhagamshelweyo: Ukudibanisa kunye neenkqubo zezithuthi ezixhunyiwe ukubonelela ngezilumkiso zengozi yexesha langempela.

9. Izimvo zeNgcali

UGqr. Lisa Johnson, ingcali yokhuseleko lwezothutho evela kwi-MIT, iphawula, "Uyilo oluqinileyo lwe-Thrie Beam guardrail lwenza ukuba lusebenze ngokukodwa kwiimeko zesantya esiphezulu. Ukuveliswa kwezinto ezintsha kwixesha elizayo kunye nobuchwepheshe kuya komeleza kuphela indima yayo kukhuseleko olusecaleni kwendlela”.

UMark Brown, INjineli ePhezulu kwiSiseko soKhuseleko eziNdleleni saMazwe ngaMazwe, yongeza, “Izakhono zokuqulatha eziphambili zeThrie Beam guardrail zenza kube lolona khetho lufanelekileyo kwiindawo ezinomngcipheko omkhulu. Ukuvela kwayo ngobuchwephesha bale mihla kuya kuqinisekisa ukuqhubeka kwayo ngokubaluleka kukhuseleko ezindleleni”.

10. Isiphelo

Inkqubo yokugada i-Thrie Beam imele isisombululo esisebenza kakhulu nesinokuqina ekwandiseni ukhuseleko ecaleni kwendlela. Ukufunxa amandla ayo aphezulu, amandla okuqulatha isithuthi, kunye nokuziqhelanisa neemeko ezahlukeneyo zendlela kuyenza ibe yinxalenye ebalulekileyo yeziseko zohola wendlela. Njengoko ukuqhubela phambili kwemathiriyeli kunye nobuchwepheshe buqhubeka, inkqubo ye-Thrie Beam kulindeleke ukuba iphucule ngakumbi ukusebenza kunye nokusebenza kakuhle, ukukhusela indawo yayo kwizicelo zokhuseleko ezindleleni zexesha elizayo.

11. FAQ

Yintoni iThrie Beam guardrail?

I-Thrie Beam guardrail luhlobo lwesithintelo sokhuseleko ecaleni kwendlela esinamaza amathathu anqamlezayo. Yenzelwe ukufunxa iimpembelelo kunye nokwalathisa izithuthi ezinokuthi ziphambuke endleleni, iphucula ukhuseleko kubaqhubi nabahambi ngeenyawo.

Zeziphi iingenelo eziphambili zokusebenzisa i-Thrie Beam guardrails?

I-Thrie Beam guardrails inika amandla aphezulu kunye nokumelana nempembelelo xa kuthelekiswa neenkqubo zamaza amaza amabini. Uyilo lwazo lunciphisa ukungena kwesithuthi ngexesha lokungqubana, ukunciphisa ukwenzakala okunokwenzeka kunye nomonakalo wepropathi. Zikwahlala ixesha elide, okwenza ukuba zifaneleke kwiindawo ezihamba phambili kunye neendawo ezinomngcipheko ophezulu.

Uyilo lweerayile zeThrie Beam lulomeleza njani ukhuseleko?

Ukucwangciswa kwamaza amathathu kuvumela ukufunxa amandla angcono ngexesha lengozi, kunceda ukuthintela isithuthi ukuba singajiki okanye siphule umqobo. Olu yilo lulawula ngokufanelekileyo amandla empembelelo, iqondise isithuthi sibuyele endleleni kunokuba sivumele ukuba sigqobhoze kwi-guardrail.

Kweziphi iimeko apho iThrie Beam guardrails isetyenziswa kakhulu?

Iindlela zokugada i-Thrie Beam ziqhele ukusetyenziswa kwiindawo zotshintsho ezifana neendlela zebhulorho, iindlela zokuphuma zeendlela ezihamba ngesantya esiphezulu apho umngcipheko wokuhamba umkhulu. Zikwathandwa nakwiindawo ezineminqantsa okanye imiqobo eyingozi ekufutshane.

Zeziphi izinto ezisetyenziswa ngokuqhelekileyo kulwakhiwo lwe-Thrie Beam guardrail?

Intsimbi ephezulu yeyona nto isetyenziswayo ngenxa yokuqina kwayo kunye nokukwazi ukumelana neempembelelo ezinzima. Ezinye iisistim zisenokudibanisa ii-coatings ezinganyangekiyo ukuze bandise ubomi bazo kwiimeko ezahlukeneyo zokusingqongileyo.

Ngaba ii-guardrails ze-Thrie Beam zithelekiswa njani ne-W-Beam yokugada ngokwemigaqo yokusebenza?

Ngelixa zombini ezi ntlobo zisebenzela injongo yesiqulatho sesithuthi, i-Thrie Beam guardrails iqhuba ngcono kwiimeko zokuntlitheka ngenxa yolwakhiwo olunamandla. Uyilo lwamaza amathathu luvumela ukufunxa amandla amakhulu kunye nokuphuculwa kokuhanjiswa kwesithuthi xa kuthelekiswa noyilo lwamaza amabini e-W-Beam.

Zeziphi iimfuneko zobude be Thrie Beam guardrails?

Izikhokelo ze-OSHA zichaza ukuba umphetho ophezulu we-Thrie Beam guardrails kufuneka ube phakathi kwe-39 kunye ne-45 intshi ngaphezu kwendlela, kunye nobude obuqhelekileyo obuyi-intshi ezingama-42 kunye okanye thabatha i-intshi ezi-3. Lo mphakamo unceda ekuqinisekiseni uthintelo olusebenzayo ngelixa ufikeleleka kulondolozo.

Zeziphi iindlela zogcino ezicetyiswayo kwiirayili zeThrie Beam?

Ukuhlolwa rhoqo kubalulekile ukujonga umonakalo womzimba, ukubola kunye nokulungelelaniswa. Ukucoca inkunkuma kunye nokuqinisekisa ukubonakala kweziphawuli ezibonisayo nazo zibalulekile. Naziphi na iimpawu zokugqoka kufuneka ziqwalaselwe ngokukhawuleza ukugcina imigangatho yokhuseleko.

Isebenza njani inkqubo yofakelo lweThrie Beam guardrails?

Ufakelo luqala ngovavanyo lwesiza kunye nokulungiswa, kubandakanywa ukucocwa kwendawo kunye nokuqinisekisa ukukhutshwa kwamanzi okufanelekileyo. Izithuba zibekwe emhlabeni ngamaxesha athile, kwaye amacandelo e-guardrail aqhotyoshelwe ngokukhuselekileyo. Ufakelo kufuneka luhambelane nemimiselo yendawo kunye nezikhokelo zokhuseleko ukuqinisekisa ukusebenza kakuhle.

Yeyiphi imimiselo elawula ukusetyenziswa kweetrayile zeThrie Beam?

Ukusetyenziswa kunye nokufakwa Thrie Beam guardrails zilawulwa yimibutho efana American Association of State Highway kunye namagosa ezoThutho (AASHTO) kunye Federal Highway Administration (FHWA). La maqumrhu abonelela ngezikhokelo kuyilo, imathiriyeli, kunye nezenzo zokufakela.

Imiba yokusingqongileyo ikuchaphazela njani ukusebenza kweThrie Beam guardrails?

Imiba yokusingqongileyo efana nekhephu, umkhenkce, kunye nemvula eninzi inokuchaphazela ukubonakala kunye nokusebenza kweentsimbi zokulinda. Kwiingingqi ezinekhephu, kubalulekile ukuqinisekisa ukuba iindawo zokugada zihlala zicocekile kukugquma kwekhephu, ngelixa kwiindawo ezithanda ukukhukula, ukukhupha amanzi okufanelekileyo kwindawo yofakelo kubalulekile.

Bubuphi ubomi obuqhelekileyo benkqubo yeThrie Beam yokugada?

Ngokugcinwa okufanelekileyo kunye nokhathalelo, i-Thrie Beam guardrails ingahlala naphi na ukusuka kwi-20 ukuya kwi-30 iminyaka. Ukuhlolwa rhoqo kunye nokulungiswa ngokukhawuleza kubalulekile ekwandiseni ubomi babo benkonzo.

Ziqhuba njani iThrie Beam kuvavanyo lwengozi?

I-Thrie Beam guardrails ziye zatyhubela uvavanyo olubanzi lwengozi kwaye ngokubanzi zibonisa ukusebenza olomeleleyo ekwalathiseni kwakhona izithuthi kunye nokunciphisa ubukhali bempembelelo. Ziyilelwe ukuhlangabezana okanye zigqithise imigangatho yokhuseleko ebekwe ngamaqumrhu alawulayo ahlukeneyo.

Yeyiphi imingeni eyayanyaniswa nokufakela iThrie Beam guardrails?

Imingeni ibandakanya ukujongana nomhlaba ongalinganiyo, ukuqinisekisa ulungelelwaniso olufanelekileyo kunye nobude, kunye nokuthobela imimiselo yendawo. Ukongeza, ukufakwa kwiindawo ezinomthamo omkhulu wetrafikhi kunokuba nzima ngokwenkqubo kwaye kunokufuna izicwangciso zolawulo lwendlela.

Zingadityaniswa njani ii-guardrails ze-Thrie Beam kuyilo lonke lokhuseleko ezindleleni?

I-Thrie Beam guardrails inokuba yinxalenye yesicwangciso esipheleleyo sokhuseleko ezindleleni esibandakanya iimpawu, izibane, kunye neempawu zendlela. Oku kudityaniswa kunceda ekuphuculeni ulwazi lwabaqhubi kwaye kunciphisa ukubakho kweengozi.

Ngaba lukhona uqwalaselo olukhethekileyo lweeThrie Beam zoonogada kwiindawo zasezidolophini?

Kwiindawo zasezidolophini, iinkozo zokhuseleko kufuneka ziqwalasele ukhuseleko lwabahambi ngeenyawo kunye neenkxalabo zobuhle. Zisenokufuneka zifakelwe kufutshane neendlela zendlela kwaye ziyilelwe ukunciphisa umqobo obonakalayo ngeli lixa zibonelela ngamanyathelo okhuseleko asebenzayo.

Zeziphi iimpembelelo zeendleko zokufakela i-Thrie Beam guardrails xa kuthelekiswa nezinye iintlobo?

I-Thrie Beam guardrails ngokubanzi ineendleko eziphezulu zokuqala ngenxa yemathiriyeli yazo kunye neemfuno zofakelo. Nangona kunjalo, ukuqina kwazo kunye nesidingo esincitshisiweyo sokutshintshwa kunokukhokelela kugcino lweendleko zexesha elide.

Ingaba iThrie Beam guardrails inegalelo njani ekucutheni iingozi ezindleleni?

Ngokuthintela izithuthi ekuphumeni kwendlela, iThrie Beam guardrails iwunciphisa kakhulu umngcipheko weengozi ezimandundu, ngakumbi kwiindawo ezinomngcipheko omkhulu. Banceda ukugcina ulawulo lwezithuthi ngexesha lokungqubana kunye nokuthintela i-rollovers.

Zeziphi izinto ezintsha ezenziwayo kuyilo lweThrie Beam guardrail?

Izinto ezintsha ezisandula ukwenziwa ziquka imathiriyeli eyomeleziweyo ephucula ukuqina kunye nokuguquguquka, uyilo olwandisa ukubonakala (njengezinto ezibonisa ukukhanya), kunye nokuphuculwa kobuchwepheshe bokufunxeka kwamandla okuphucula ngakumbi ukhuseleko.

Iindlela zokugada zeThrie Beam zinefuthe njani ukuhamba kwezithuthi kunye nokuziphatha?

I-Thrie Beam guardrails imisela imida ecacileyo yabaqhubi, ikhuthaza indlela yokuziphatha ekhuselekileyo ngokucutha iimeko zokubhadula kweemoto endleleni. Banegalelo kukhuseleko ezindleleni ngokubanzi, nto leyo enokwandisa ukuhamba kwezithuthi ngokunciphisa iingozi.