Wokondedwa 2+1. Njira yotsika mtengo yodutsa motetezeka
Kupanga ma motorways kapena ma extraways ndi okwera mtengo komanso ovuta. Kuwonjezeka kwakukulu kwa chitetezo kungapezeke mwa kukweza msewu ku 2 + 1 muyezo, i.e. njira ziwiri zopita kunjira yomwe wapatsidwa ndi njira imodzi mbali ina.
Misewu yokhala ndi mbali zotsutsana za magalimoto imasiyanitsidwa ndi zotchinga zachitetezo. Cholinga chake ndikuwongolera momwe magalimoto amayendera (njira yowonjezera yosinthira imapangitsa kuti kupitilira kukhale kosavuta) ndikuwonjezera chitetezo (chotchinga chapakati kapena zingwe zachitsulo zimachotsa chiwopsezo cha kugunda chakutsogolo). Misewu 2 + 1 idapangidwa ku Sweden ndipo ikumangidwa kumeneko (kuyambira 2000), komanso ku Germany, Netherlands ndi Ireland. Anthu a ku Sweden ali kale ndi makilomita 1600, chiwerengero chofanana ndi magalimoto omangidwa kuyambira 1955, ndipo chiwerengerocho chikukula.
- Gawo lachiwiri kuphatikiza misewu imodzi ndi yotsika mtengo kuwirikiza kakhumi kuposa ma motorways pomwe ikuperekabe magalimoto abwino komanso otetezeka. - anafotokoza injiniya. Lars Ekman, katswiri pa Swedish Main Road Administration. M'malingaliro ake, mainjiniya omwe amamanga misewu ndi chilichonse chomwe chimapangidwira ayenera kukhala ndi udindo wachitetezo. Ngati chinthu chili chosatetezeka, chiyenera kukonzedwa kapena kutetezedwa bwino. Amafanizitsa izi ndi zochitika za womanga nyumba: ngati muyika khonde pansanjika yachitatu popanda njanji, ndithudi sadzaika chizindikiro chochenjeza, koma amangotseka chitseko. Inde, ndi bwino kukhazikitsa njanji.
N'chimodzimodzinso m'misewu - ngati msewu ndi woopsa, pali mikangano pamutu, ndiye m'pofunika kuyika zotchinga kulekanitsa misewu yomwe ikubwera, osati kuyika zizindikiro zochenjeza kapena kudziwitsa kuti chotchinga choterocho chidzawoneka m'zaka zitatu. . Ubwino umodzi waukulu wa misewu yapawiri-kuphatikiza ndikulekanitsa misewu yomwe ikubwera. Izi zimathetsa kugundana kwamutu, komwe ndi mliri wamisewu ya ku Poland komanso chifukwa chachikulu cha ngozi zoopsa. Anthu a ku Sweden atakhazikitsa pulogalamu ya misewu yatsopano, chiwerengero cha anthu amene anaphedwa chinachepa. Anthu aku Scandinavia akutsatiranso zomwe amatcha Vision Zero, pulogalamu yazaka zambiri, yokonzedwa kuti ichepetse ngozi zowopsa kwambiri mpaka ziro. Chiwerengero cha ngozi zakupha chikuyembekezeka kuchepetsedwa ndi theka pofika 2020.
Misewu iwiri yoyambilira yokhala ndi mphambano ya 2+1, misewu ya Gołdap ndi Mragowo, inamalizidwa mu 2011. Ndalama zina zinatsatira. "Malo" ambiri a ku Poland okhala ndi mapewa akuluakulu akhoza kusinthidwa kukhala misewu iwiri-kuphatikiza-mmodzi. Pangani ma harne atatu mwa awiri omwe alipo ndipo, ndithudi, alekanitseni ndi chotchinga chitetezo. Pambuyo pomanganso, magalimoto amasinthasintha pakati pa njira imodzi ndi magawo awiri. Choncho chotchingacho chikufanana ndi njoka yaikulu. Pamene palibe mapewa panjira, nthaka iyenera kugulidwa kwa alimi.
- Kwa dalaivala, gawo lachiwiri-kuphatikiza-limodzi limachepetsa kupsinjika komwe kumachitika chifukwa cholephera kudutsa misewu yachikhalidwe. Pamene dalaivala amayenda nthawi yaitali m’gulu limodzi la magalimoto olemera, m’pamenenso amafuna kuwadutsa, zomwe n’zoopsa. Mwayi wa ngozi yopha anthu ndiwochuluka. Chifukwa cha zigawo ziwiri za msewu, zidzakhala zotheka kudutsa. Izi zidzasintha mikhalidwe, chitetezo ndi nthawi yoyenda. - adalongosola akatswiri a GDDKiA.
- Ngozi ikachitika pachigawo chimodzi chamsewu, ogwira ntchito zadzidzidzi amangochotsa zotchinga zingapo ndikusamutsa magalimoto kupita kunjira zina ziwiri. Kotero msewuwu sunatsekerezedwa, palibe ngakhale magalimoto oyendayenda, koma magalimoto opitirira, koma pa liwiro lochepa. Izi zikuwonetsedwa ndi zizindikiro zogwira ntchito, akutero Lars Ekman. Chinthu chowonjezera cha 2 + 1 chikhoza kukhala msewu wopapatiza womwe umasonkhanitsa magalimoto am'deralo (galimoto, njinga, oyenda pansi) ndikupita ku mphambano yapafupi.
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