N\u0103m 1885, ng\u01b0\u01a1\u0300i \u0110\u01b0\u0301c l\u00e2\u0300n \u0111\u00e2\u0300u ti\u00ean \u0111a\u0303 ch\u00ea\u0301 ta\u0323o \u0111\u01b0\u01a1\u0323c m\u00f4\u0323t chi\u00ea\u0301c \u00f4t\u00f4 cha\u0323y b\u0103\u0300ng \u0111\u00f4\u0323ng c\u01a1 \u0111\u00f4\u0301t trong b\u00f4\u0301n ky\u0300. T\u01b0\u0300 \u0111o\u0301 t\u01a1\u0301i nay, \u00f4t\u00f4 \u0111a\u0303 co\u0301 g\u00e2\u0300n 200 n\u0103m li\u0323ch s\u01b0\u0309. Ng\u01b0\u01a1\u0300i ta lu\u00f4n l\u00e2\u0301y t\u00f4\u0301c \u0111\u00f4\u0323 la\u0300m mu\u0323c \u0111i\u0301ch thi\u00ea\u0301t k\u00ea\u0301 ch\u00ea\u0301 ta\u0323o \u00f4t\u00f4. \u0110\u00ea\u0309 co\u0301 th\u00ea\u0309 pha\u0301t huy \u0111\u00e2\u0300y \u0111u\u0309 ti\u0301nh n\u0103ng t\u00f4\u0301c \u0111\u00f4\u0323 cao cu\u0309a ca\u0301c loa\u0323i xe, nh\u01b0\u0303ng con \u0111\u01b0\u01a1\u0300ng trong ca\u0301c tha\u0300nh ph\u00f4\u0301 hi\u00ea\u0323n \u0111a\u0323i \u0111a\u0303 \u0111\u01b0\u01a1\u0323c chia ra tha\u0300nh \u0111\u01b0\u01a1\u0300ng cho xe cha\u0323y ch\u00e2\u0323m va\u0300 \u0111\u01b0\u01a1\u0300ng cho xe cha\u0323y nhanh, \u0111\u00f4\u0300ng th\u01a1\u0300i ng\u01b0\u01a1\u0300i ta co\u0300n thi\u00ea\u0301t k\u00ea\u0301 ri\u00eang nh\u01b0\u0303ng con \u0111\u01b0\u01a1\u0300ng cao t\u00f4\u0301c.<\/p>\n\n\n\n
Tuy nhi\u00ean la\u0323i co\u0301 m\u00f4\u0323t th\u01b0\u0323c t\u00ea\u0301 la\u0300 v\u01a1\u0301i hy vo\u0323ng t\u00f4\u0301c \u0111\u00f4\u0323 xe cha\u0323y ca\u0300ng nhanh ng\u01b0\u01a1\u0300i ta la\u0323i ca\u0300ng ha\u0323n ch\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 cha\u0323y cu\u0309a xe. Ta\u0323i sao nh\u01b0 v\u00e2\u0323y?<\/p>\n\n\n\n
Chu\u0301ng ta bi\u00ea\u0301t r\u0103\u0300ng \u00f4t\u00f4 d\u01b0\u0323a va\u0300o l\u01b0\u0323c ma sa\u0301t gi\u01b0\u0303a b\u00f4\u0301n ba\u0301nh (hay nhi\u00ea\u0300u h\u01a1n) \u0111\u00f4\u0301i v\u01a1\u0301i m\u0103\u0323t \u0111\u00e2\u0301t \u0111\u00ea\u0309 chuy\u00ea\u0309n \u0111\u00f4\u0323ng v\u00ea\u0300 phi\u0301a tr\u01b0\u01a1\u0301c, vi\u0300 th\u00ea\u0301 chu\u0301ng pha\u0309i d\u01b0\u0323a va\u0300o vi\u00ea\u0323c n\u00e2ng cao tro\u0323ng l\u01b0\u0323c cu\u0309a xe \u0111\u00ea\u0309 t\u0103ng cao l\u01b0\u0323c ma sa\u0301t. N\u00ea\u0301u kh\u00f4ng ti\u00ea\u0301p xu\u0301c v\u01a1\u0301i m\u0103\u0323t \u0111\u00e2\u0301t. \u00f4t\u00f4 se\u0303 bi\u0323 m\u00e2\u0301t ki\u00ea\u0309m soa\u0301t va\u0300 \u0111i\u00ea\u0300u na\u0300y v\u00f4 cu\u0300ng nguy hi\u00ea\u0309m. Khi \u00f4t\u00f4 cha\u0323y v\u01a1\u0301i m\u00f4\u0323t t\u00f4\u0301c \u0111\u00f4\u0323 cao, no\u0301 co\u0300n pha\u0309i chi\u0323u m\u00f4\u0323t l\u01b0\u0323c \u0111\u00e2\u0309y l\u00ean phi\u0301a tr\u00ean cu\u0309a kh\u00f4ng khi\u0301. L\u01b0\u0323c na\u0300y do do\u0300ng kh\u00f4ng khi\u0301 \u0111\u00f4\u0301i l\u01b0u sinh ra. T\u00f4\u0301c \u0111\u00f4\u0323 xe ca\u0300ng nhanh, l\u01b0\u0323c n\u00e2ng na\u0300y ca\u0300ng ma\u0323nh va\u0300 la\u0300m t\u0103ng kha\u0309 n\u0103ng kh\u00f4ng ti\u00ea\u0301p xu\u0301c v\u01a1\u0301i m\u0103\u0323t \u0111\u00e2\u0301t cu\u0309a \u00f4t\u00f4. Khi ba\u0309n th\u00e2n tro\u0323ng l\u01b0\u0323c cu\u0309a \u00f4t\u00f4 kh\u00f4ng th\u00ea\u0309 kh\u0103\u0301c phu\u0323c l\u01b0\u0323c n\u00e2ng cao cu\u0309a kh\u00f4ng khi\u0301, se\u0303 sinh ra hi\u00ea\u0323n t\u01b0\u01a1\u0323ng l\u00e2\u0323t xe. T\u01b0\u0300 \u0111o\u0301 co\u0301 th\u00ea\u0309 th\u00e2\u0301y, ha\u0323n ch\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 cu\u0309a xe la\u0300 m\u00f4\u0323t gia\u0309i pha\u0301p c\u00e2\u0300n thi\u00ea\u0301t.<\/p>\n\n\n\n
H\u00e2\u0300u h\u00ea\u0301t ca\u0301c qu\u00f4\u0301c gia tr\u00ean th\u00ea\u0301 gi\u01a1\u0301i \u0111\u00ea\u0300u ti\u00ea\u0301n ha\u0300nh ha\u0323n ch\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 cu\u0309a xe \u00f4t\u00f4, nh\u01b0ng quy \u0111i\u0323nh cu\u0309a m\u00f4\u0303i n\u01b0\u01a1\u0301c la\u0323i kh\u00f4ng gi\u00f4\u0301ng nhau. \u0110\u01b0\u0301c la\u0300 m\u00f4\u0323t trong s\u00f4\u0301 i\u0301t nh\u01b0\u0303ng qu\u00f4\u0301c gia kh\u00f4ng ha\u0323n ch\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 cu\u0309a xe c\u00f4\u0323. Nh\u01b0ng xe phanh g\u00e2\u0301p hay re\u0303 ngang v\u01a1\u0301i t\u00f4\u0301c \u0111\u00f4\u0323 cao v\u00e2\u0303n bi coi la\u0300 vi pha\u0323m lu\u00e2\u0323t giao th\u00f4ng. \u01a0\u0309 m\u00f4\u0323t s\u00f4\u0301 qu\u00f4\u0301c gia nh\u01b0 Pha\u0301p, Italia, Thu\u0323y Si\u0303; t\u00f4\u0301c \u0111\u00f4\u0323 cho phe\u0301p l\u01a1\u0301n nh\u00e2\u0301t la\u0300 130 km\/h; m\u00f4\u0323t s\u00f4\u0301 n\u01b0\u01a1\u0301c kha\u0301c nh\u01b0 Bungari, Nam T\u01b0, Ph\u00e2\u0300n Lan, t\u00f4\u0301c \u0111\u00f4\u0323 cho phe\u0301p l\u01a1\u0301n nh\u00e2\u0301t la\u0300 120 km\/h. \u01a0\u0309 ca\u0301c n\u01b0\u01a1\u0301c Thuy\u0323 \u0110i\u00ea\u0309n, Anh, Ti\u00ea\u0323p Kh\u0103\u0301c la\u0300 110 km\/h; \u01a1\u0309 Nh\u00e2\u0323t Ba\u0309n, Hungari, Hy La\u0323i la\u0300 100 km\/h; \u01a1\u0309 Rumani, Th\u00f4\u0309 Nhi\u0303 Ky\u0303, Nauy la\u0300 90 km\/h. My\u0303 la\u0300 n\u01b0\u01a1\u0301c co\u0301 ti\u0309 l\u00ea\u0323 pha\u0301t sinh tai na\u0323n giao th\u00f4ng nhi\u00ea\u0300u nh\u00e2\u0301t th\u00ea\u0301 gi\u01a1\u0301i; vi\u0300 th\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 cao nh\u00e2\u0301t cho phe\u0301p la\u0300 80 km\/h. Ngoa\u0300i ra, Pha\u0301p va\u0300 B\u00f4\u0300 \u0110a\u0300o Nha co\u0300n quy \u0111i\u0323nh v\u01a1\u0301i nh\u01b0\u0303ng la\u0301i xe m\u01a1\u0301i (l\u00e2\u0301y gi\u00e2\u0301y phe\u0301p la\u0301i xe ch\u01b0a t\u01a1\u0301i hai n\u0103m) thi\u0300 t\u00f4\u0301c \u0111\u00f4\u0323 cho phe\u0301p l\u01a1\u0301n nh\u00e2\u0301t la\u0300 90km\/h. Co\u0300n \u01a1\u0309 Thuy\u0323 \u0110i\u00ea\u0309n, ta\u0323i ca\u0301c \u0111i\u00ea\u0309m d\u00e2n c\u01b0, t\u00f4\u0301c \u0111\u00f4\u0323 l\u01a1\u0301n nh\u00e2\u0301t cu\u0309a xe kh\u00f4ng \u0111\u01b0\u01a1\u0323c qua\u0301 50 km\/h. Ta\u0323i ca\u0301c \u0111\u01b0\u01a1\u0300ng ph\u00f4\u0301 chi\u0301nh trong tha\u0300nh ph\u00f4\u0301, t\u00f4\u0301c \u0111\u00f4\u0323 cao nh\u00e2\u0301t \u0111\u01b0\u01a1\u0323c phe\u0301p cha\u0323y la\u0300 60km\/h.<\/p>\n\n\n\n
Trung Qu\u00f4\u0301c quy \u0111i\u0323nh t\u00f4\u0301c \u0111\u00f4\u0323 l\u01a1\u0301n nh\u00e2\u0301t cu\u0309a ca\u0301c loa\u0323i xe \u00f4t\u00f4 cha\u0323y tr\u00ean \u0111\u01b0\u01a1\u0300ng cao t\u00f4\u0301c th\u01b0\u01a1\u0300ng kh\u00f4ng \u0111\u01b0\u01a1\u0323c v\u01b0\u01a1\u0323t qua\u0301 120 km\/h. \u0110i\u00ea\u0300u thu\u0301 vi\u0323 h\u01a1n n\u01b0\u0303a la\u0300 tr\u00ean \u0111\u01b0\u01a1\u0300ng cao t\u00f4\u0301c, ng\u01b0\u01a1\u0300i ta co\u0300n ti\u00ea\u0301n ha\u0300nh ha\u0323n ch\u00ea\u0301 t\u00f4\u0301c \u0111\u00f4\u0323 th\u00e2\u0301p nh\u00e2\u0301t cu\u0309a xe; th\u00f4ng th\u01b0\u01a1\u0300ng la\u0300 kh\u00f4ng \u0111\u01b0\u01a1\u0323c cha\u0323y d\u01b0\u01a1\u0301i 50km\/h. Mu\u0323c \u0111i\u0301ch cu\u0309a quy \u0111i\u0323nh na\u0300y la\u0300 c\u00e2\u0301m nh\u01b0\u0303ng loa\u0323i xe co\u0301 t\u00f4\u0301c qua\u0301 ch\u00e2\u0323m \u0111i va\u0300o \u0111\u01b0\u01a1\u0300ng cao t\u00f4\u0301c, a\u0309nh h\u01b0\u01a1\u0309ng t\u01a1\u0301i hoa\u0323t \u0111\u00f4\u0323ng giao th\u00f4ng bi\u0300nh th\u01b0\u01a1\u0300ng \u01a1\u0309 \u0111\u00e2y.<\/p>\n","protected":false},"excerpt":{"rendered":"
N\u0103m 1885, ng\u01b0\u01a1\u0300i \u0110\u01b0\u0301c l\u00e2\u0300n \u0111\u00e2\u0300u ti\u00ean \u0111a\u0303 ch\u00ea\u0301 ta\u0323o \u0111\u01b0\u01a1\u0323c m\u00f4\u0323t chi\u00ea\u0301c \u00f4t\u00f4 cha\u0323y b\u0103\u0300ng \u0111\u00f4\u0323ng c\u01a1 \u0111\u00f4\u0301t trong b\u00f4\u0301n ky\u0300. T\u01b0\u0300 \u0111o\u0301 t\u01a1\u0301i nay, \u00f4t\u00f4 \u0111a\u0303 co\u0301 g\u00e2\u0300n 200 n\u0103m li\u0323ch s\u01b0\u0309. Ng\u01b0\u01a1\u0300i ta lu\u00f4n l\u00e2\u0301y t\u00f4\u0301c \u0111\u00f4\u0323 la\u0300m mu\u0323c \u0111i\u0301ch thi\u00ea\u0301t k\u00ea\u0301 ch\u00ea\u0301 ta\u0323o \u00f4t\u00f4. \u0110\u00ea\u0309 co\u0301 th\u00ea\u0309 pha\u0301t huy \u0111\u00e2\u0300y \u0111u\u0309 […]<\/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":[1,15],"tags":[],"class_list":["post-11615","post","type-post","status-publish","format-standard","hentry","category-general","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11615","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=11615"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/11615\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=11615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=11615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=11615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}