{"id":8856,"date":"2021-11-21T15:18:19","date_gmt":"2021-11-21T08:18:19","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8856"},"modified":"2021-11-21T16:03:00","modified_gmt":"2021-11-21T09:03:00","slug":"tai-sao-cac-doan-cong-o-duong-sat-thi-tau-chay-khong-an-toan-con-tren-duong-cao-toc-thi-chay-xe-lai-an-toan","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tai-sao-cac-doan-cong-o-duong-sat-thi-tau-chay-khong-an-toan-con-tren-duong-cao-toc-thi-chay-xe-lai-an-toan\/","title":{"rendered":"T\u1ea1i sao c\u00e1c \u0111o\u1ea1n cong \u1edf \u0111\u01b0\u1eddng s\u1eaft th\u00ec t\u00e0u ch\u1ea1y kh\u00f4ng an to\u00e0n, c\u00f2n tr\u00ean \u0111\u01b0\u1eddng cao t\u1ed1c th\u00ec ch\u1ea1y xe l\u1ea1i an to\u00e0n?"},"content":{"rendered":"\n

\u0110\u01b0\u1eddng cao t\u1ed1c r\u1ed9ng l\u1edbn, ph\u1eb3ng phiu, c\u00f3 \u0111\u1ee7 nh\u1eefng \u0111i\u1ec1u ki\u1ec7n t\u1ed1t cho xe ch\u1ea1y, tuy nhi\u00ean, khi ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng cao t\u1ed1c qu\u00e1 th\u1eb3ng t\u1eafp, qu\u00e1 b\u1eb1ng ph\u1eb3ng, \u00e2m \u0111i\u1ec7u c\u1ee7a \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 \u0111\u1ec1u kh\u00f4ng \u0111\u1ed5i, n\u00ean ch\u1ea1y l\u00e2u nh\u01b0 v\u1eady, ng\u01b0\u1eddi l\u00e1i xe v\u00ec thi\u1ebfu s\u1ef1 k\u00edch th\u00edch c\u1ee7a th\u00ednh gi\u00e1c, c\u00f3 th\u1ec3 d\u1ea7n d\u1ea7n sinh ra m\u1ec7t m\u1ecfi v\u1ec1 tinh th\u1ea7n, c\u1ea3m gi\u00e1c v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng nhanh s\u1ebd theo \u0111\u00f3 m\u00e0 suy gi\u1ea3m \u0111i; m\u1eb7t kh\u00e1c, \u0111\u00f4i m\u1eaft c\u1ee7a ng\u01b0\u1eddi l\u00e1i xe n\u1ebfu m\u1ed9t th\u1eddi gian d\u00e0i lu\u00f4n lu\u00f4n nh\u00ecn v\u1ec1 ph\u01b0\u01a1ng xa v\u00f4 h\u1ea1n, c\u0169ng s\u1ebd s\u1ea3n sinh ra m\u1ed9t s\u1ef1 sai bi\u1ec7t v\u1ec1 th\u1eddi gian, nh\u00ecn xe \u1edf g\u1ea7n th\u00e0nh xe \u1edf xa, t\u1ea1o n\u00ean ph\u00e1n \u0111o\u00e1n nh\u1ea7m l\u1eabn, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn an to\u00e0n giao th\u00f4ng. Do v\u1eady, r\u1ea5t nhi\u1ec1u n\u01b0\u1edbc c\u00f3 n\u1ec1n kinh t\u1ebf ph\u00e1t tri\u1ec3n \u0111\u00e3 h\u1ea1n ch\u1ebf b\u1edbt c\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng th\u1eb3ng kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 1\/40-1\/20 s\u1ed1 kil\u00f4met tr\u00ean 1 gi\u1edd ch\u1ea1y xe theo thi\u1ebft k\u1ebf<\/a>. \u0110\u1ed3ng th\u1eddi, ph\u1ea3i c\u0103n c\u1ee9 theo \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 \u0111\u1ecba h\u00ecnh v\u00e0 c\u1ea3nh quan, v.v. d\u1ecdc theo con \u0111\u01b0\u1eddng \u0111\u1ec3 thi\u1ebft k\u1ebf<\/a> m\u1ed9t s\u1ed1 \u0111o\u1ea1n cong c\u00f3 b\u00e1n k\u00ednh r\u1ea5t l\u1edbn, \u0111\u1ec3 \u0111i\u1ec1u ti\u1ebft t\u00e2m l\u00fd ng\u01b0\u1eddi l\u00e1i, gi\u1ea3m b\u1edbt tai n\u1ea1n x\u1ea3y ra. B\u1edfi v\u1eady, c\u00e1c \u0111o\u1ea1n cong tr\u00ean \u0111\u01b0\u1eddng cao t\u1ed1c l\u00e0 c\u00f3 l\u1ee3i cho vi\u1ec7c ch\u1ea1y xe an to\u00e0n.<\/p>\n\n\n\n

Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng s\u1eaft th\u00ec nh\u1eefng \u0111o\u1ea1n cong l\u1ea1i kh\u00e1c. \u1ede nh\u1eefng \u0111o\u1ea1n cong, \u0111\u1ec3 gi\u1ea3m b\u1edbt \u0111\u1ed9 m\u00f2n c\u1ee7a thanh ray, b\u1ea3o \u0111\u1ea3m t\u00e0u ch\u1ea1y an to\u00e0n, khi x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng s\u1eaft ng\u01b0\u1eddi ta l\u00e0m cho \u0111\u01b0\u1eddng ray \u1edf ph\u00eda ngo\u00e0i cao h\u01a1n \u1edf ph\u00eda trong g\u1ecdi l\u00e0 “ray ngo\u00e0i si\u00eau cao”. N\u1ebfu t\u00e0u v\u00e0o \u0111\u01b0\u1eddng c\u00e0ng cong th\u00ec s\u1ef1 thay \u0111\u1ed5i chi\u1ec1u chuy\u1ec3n \u0111\u1ed9ng s\u1ebd c\u00e0ng nhanh, l\u00fac n\u00e0y “ray ngo\u00e0i si\u00eau cao” s\u1ebd c\u00e0ng l\u1edbn h\u01a1n. Tuy nhi\u00ean “ray ngo\u00e0i si\u00eau cao” n\u00f3i chung kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 150 mm, n\u1ebfu kh\u00f4ng th\u00ec d\u1ec5 b\u1ecb l\u1eadt nghi\u00eang nguy hi\u1ec3m. Do \u0111\u00f3, ng\u01b0\u1eddi l\u00e1i t\u00e0u khi \u0111o\u00e0n t\u00e0u v\u00e0o \u0111\u01b0\u1eddng cong, bu\u1ed9c ph\u1ea3i gi\u1ea3m t\u1ed1c \u0111\u1ed9, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n, n\u1ebfu kh\u00f4ng tr\u1ecdng t\u00e2m \u0111o\u00e0n t\u00e0u s\u1ebd l\u1ec7ch kh\u1ecfi \u0111\u01b0\u1eddng ray, x\u1ea3y ra s\u1ef1 c\u1ed1. V\u00ec v\u1eady, c\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng cong c\u1ee7a \u0111\u01b0\u1eddng s\u1eaft tr\u1edf th\u00e0nh v\u1eadt ch\u01b0\u1edbng ng\u1ea1i quan tr\u1ecdng, \u0111o\u1ea1n cong c\u00e0ng nhi\u1ec1u, vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 t\u00e0u c\u00e0ng kh\u00f3 kh\u0103n c\u00e0ng c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 an to\u00e0n. Ch\u00ednh v\u00ec v\u1eady, \u1edf m\u1ed9t s\u1ed1 \u0111\u01b0\u1eddng s\u1eaft th\u00f4ng th\u01b0\u1eddng c\u1ee7a Trung Qu\u1ed1c khi c\u1ea3i t\u1ea1o th\u00e0nh \u0111\u01b0\u1eddng s\u1eaft cao t\u1ed1c ti\u00eau chu\u1ea9n, ng\u01b0\u1eddi ta s\u1eeda nh\u1eefng \u0111o\u1ea1n cong nh\u1ecf th\u00e0nh \u0111o\u1ea1n cong l\u1edbn, ho\u1eb7c n\u1eafn \u0111o\u1ea1n cong th\u00e0nh \u0111o\u1ea1n th\u1eb3ng v\u1edbi bi\u1ec7n ph\u00e1p nh\u01b0 v\u1eady \u0111\u00e3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u n\u00e2ng cao t\u1ed1c \u0111\u1ed9 \u0111o\u00e0n t\u00e0u \u0111\u1ed1i v\u1edbi tuy\u1ebfn \u0111\u01b0\u1eddng.<\/p>\n\n\n\n

T\u1eeb kho\u00e1: \u0110o\u1ea1n \u0111\u01b0\u1eddng cong; \u0110\u01b0\u1eddng s\u1eaft; \u0110\u01b0\u1eddng cao t\u1ed1c.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u01b0\u1eddng cao t\u1ed1c r\u1ed9ng l\u1edbn, ph\u1eb3ng phiu, c\u00f3 \u0111\u1ee7 nh\u1eefng \u0111i\u1ec1u ki\u1ec7n t\u1ed1t cho xe ch\u1ea1y, tuy nhi\u00ean, khi ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng cao t\u1ed1c qu\u00e1 th\u1eb3ng t\u1eafp, qu\u00e1 b\u1eb1ng ph\u1eb3ng, \u00e2m \u0111i\u1ec7u c\u1ee7a \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 \u0111\u1ec1u kh\u00f4ng \u0111\u1ed5i, n\u00ean ch\u1ea1y l\u00e2u nh\u01b0 v\u1eady, ng\u01b0\u1eddi l\u00e1i xe v\u00ec thi\u1ebfu s\u1ef1 k\u00edch th\u00edch c\u1ee7a th\u00ednh […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,16],"tags":[],"class_list":["post-8856","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-ky-thuat"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8856"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8856\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}