Nima bo‘ldi
Arizona Department of Public Safety 18-sentyabr kuni Chandlerda blown tire ko‘p sparks chiqarayotgan tractor-trailerni to‘xtatdi; reportga ko‘ra, driver buni sezmagan. Inspector bir nechta trailer tire bald yoki internal componentlargacha worn bo‘lganini topdi. Authority driverning CDL statusi valid bo‘lmaganini ham aytdi. Vehicle va driver ikkalasi out of service qilindi. Land Line Media incidentni 25-sentyabr kuni yoritdi; report CDL nima sababdan invalid bo‘lganini aytmadi va oversize load permitsiz bo‘lganini da’vo qilmadi.
Driver nima qilishi kerak
49 CFR 393.75 federal tire standardi body ply yoki belt material exposed bo‘lgan, tread yoki sidewall separation mavjud, flat yoki audible leak bor yoxud cut ply yoki belt materialni ochgan tire bilan operationni taqiqlaydi. Bus, truck yoki truck tractor front tirelari major grooveda kamida 4/32 inch tread depthga ega bo‘lishi kerak; boshqa tirelar uchun minimum 2/32 inch. Rule carried load uchun yetarli cold inflation pressureni ham talab qiladi. Tread minimumga yetishi boshqa prohibited defect bo‘lsa tireni safe qilmaydi.
Bu diaspora uchun nega muhim
Dispatchdan oldin ko‘z bilan taxmin qilish o‘rniga tread gaugeda o‘lchang; har bir steer, drive va trailer tireni exposed cord, separation, cut, bulge, leak, uneven wear va correct pressure bo‘yicha tekshiring. Har bir defectni driver vehicle inspection reportga yozing va unsafe condition repair qilinmaguncha combinationni yurgizmang. Carrier tripni assign qilishdan oldin driverning current license classi, endorsementlari, restrictionlari, expirationi va medical-certification statusini ham tekshirishi kerak. Road’da tire fail bo‘lsa yoki smoke yoxud sparks chiqarsa, keskin steering qilmasdan tezlikni tushiring, imkon bo‘lsa safe locationga chiqing, hazard flashersni yoqing, company procedure bo‘yicha joyni secure qiling va fire yoki immediate danger bo‘lsa emergency servicesga murojaat qiling. Foydali English terminlar: tread depth, major tread groove, exposed cord, sidewall separation, audible leak, out of service, license status va repair verification.