Inkungu Ebanda, iBridge Deck Black Ice, kanye ne-Sudden Road Glazing¶

Inkungu ebandayo kanye nokucwebezela kwedekhi yebhuloho okungazelelwe kuphakathi kwezimo eziphuthumayo zasebusika ezikhohlisayo noma yimuphi umshayeli angahlangabezana nazo. Ngokungafani nezivunguvungu zeqhwa noma iqhwa, lapho imvula ewayo ikunikeza inkomba ebonakalayo yokunciphisa isivinini, inkungu ebandayo iqukethe amaconsi amanzi awuketshezi oluncane oluncane olumiswe emoyeni osekuvele ehle ngaphansi kuka-0 degrees Celsius (32 degrees Fahrenheit). Lawa maconsi apholile kakhulu ahlala ewuketshezi kuyilapho entanta emoyeni ozolile, kodwa lapho ethinta khona indawo eqinile njengendawo ephakeme yebhuloho, umgwaqo wetiyela, insimbi yokulinda, noma iwindi lomoya elihambayo, avele abe yiqhwa eshidini elicwebezelayo elicwebezelayo noma iqhwa elicwebezelayo.

Ngemizuzu embalwa, umgwaqo omkhulu obonakala womile noma unomswakama kancane ungalahlekelwa kufika kumaphesenti angama-80 wokudonsa kwawo amathayi kuyilapho ukubonakala kwehla ngaphansi kwamamitha angu-50 (165 amafidi). Ngenxa yokuthi amabhuloho aphakeme kanye nezindawo ezidlula umgwaqo omkhulu zichayeka emoyeni oqandayo ngaphezu kwemizila yokuhamba nangaphansi kwezinsimbi zesakhiwo, ziba yiqhwa ziqine imizuzu engu-30 kuya kwengu-90 ngaphambi kokuba kube nemibhede yobumba. Ukwazi ukubona inkungu epholile ngaphambi kokuba amathayi akho awele indawo enwetshiwe yebhuloho elineqhwa, ukuthi ungazivikela kanjani izisusi ze-windshield nezinzwa ze-radar ukuthi zingangeni phakathi nedrayivu, ukuthi ungalulama kanjani ku-skid yedekhi yebhuloho ngaphandle kokuthinta amabhuleki, nokuthi ungasinda kanjani ekunqwabeleni kwenkungu yezimoto eziningi kusindisa izimpilo.

Yenza lokhu manje¶

1. Khansela i-cruise control kanye ne-adaptive speed control ngokushesha usebenzisa inkinobho yesiteringi. Ungalokothi uthephe ibhuleki ukuze ukhiphe isilawuli se-cruise control lapho ufaka inkungu emazingeni okushisa aseduze noma ngaphansi kuka-4 degrees Celsius (40 degrees Fahrenheit). Ukucindezela ibhuleki kumakhiya ebhuloho elicwebezelayo noma kuthuntubeza amasondo angaphambili, kuyilapho ushiya isilawuli sohambo sisebenza kubangela ukuthi ikhompuyutha yemoto ifake i-torque esheshayo uma isondo lokushayela lishibilika eqhweni elimnyama.
2. Yenza unyawo lwakho lube lula ku-accelerator ngaphambi kokuwela noma yiliphi ibhuloho, i-overpass, noma indlela ephakeme ephakeme. Yehlisa isivinini sakho emgwaqeni wodaka kuyilapho amathayi esabambile. Uma amasondo akho ewela endaweni yokunweba yensimbi yedekhi yebhuloho, bamba isiteringi sifile siqonde, gcina izinyawo zakho zingekho kukho kokubili ibhuleki namaphedali egesi, bese ugudla ngokushelela phakathi nendawo.
3. Vula izibani zakho zangaphambili ezinebhimu ephansi, amalambu enkungu angaphambili, namalambu enkungu angemuva ngokushesha. Ungalokothi usebenzise izibani zangaphambili ezinebhimu ephezulu enkunguni eqandayo, ngoba ukukhanya okubheke phezulu kukhombisa ngokuqondile kumaconsi amancane amisiwe futhi kudala udonga olumnyama olucwazimulayo. Ungathembeli kumalambu asebenza emini azenzakalelayo, avame ukushiya amalambu akho angemuva abe mnyama ngokuphelele ngenxa yenkungu eminyene.
4. Set your windshield defroster to maximum warm air and switch off cabin air recirculation. Supercooled fog droplets freeze on contact with cold safety glass, forming an instant opaque crust across your windshield and coating your wiper blades in rigid ice. Direct full heat onto the glass and crack a side window by 5 millimeters (0.2 inches) to purge interior moisture and listen for crashes ahead.
5. Steer smoothly into the direction of any slide and never slam the brakes. If your rear tires break loose on a glazed bridge deck, keep your eyes focused far down the center of your target lane and turn the steering wheel smoothly in the same direction the rear of the car is sliding. If the slide continues, shift into Neutral or press the clutch pedal down to disconnect engine drag and regenerative braking.
6. Exit the highway at the very next ramp, rest area, or service plaza. Freezing fog and bridge deck black ice rarely affect just one span; if one overpass has glazed over, every bridge, shaded rock cut, and river valley viaduct ahead is an active ice trap. If you are involved in a spinout or collision, keep your seatbelt fastened inside your vehicle and call your local emergency number (911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom) or check izinombolo eziphuthumayo.

The atmospheric physics of freezing fog, rime ice, and black ice¶

Many drivers are surprised to learn that liquid fog can exist when the air temperature is minus 5 degrees Celsius (23 degrees Fahrenheit) or even minus 15 degrees Celsius (5 degrees Fahrenheit). Understanding how supercooled water droplets behave explains why freezing fog is far more treacherous than ordinary wet fog or dry powder snow.

flowchart TD
    A["Driving in Fog or Mist Below 4 C (40 F)"] --> B{"Check Side Mirrors, Antenna, and Road Spray"}
    B -->|"Tires kick up water spray and mirrors are wet"| C["Liquid Fog: Turn on low beams, double following gap to 6+ seconds"]
    B -->|"Ice crust on mirrors/wipers OR zero tire spray ahead"| D["FREEZING FOG & BLACK ICE ACTIVE"]
    D --> E["Cancel cruise control via button, turn defrost to high, slow down on earthen road"]
    E --> F{"Approaching a Bridge Deck, Overpass, or River Viaduct?"}
    F -->|"Yebo"| G["Complete all braking BEFORE bridge joint; coast straight across with zero pedal input"]
    F -->|"No: On open road"| H["Increase following gap to 10 to 12 seconds; watch lane lines on right edge"]
    G --> I{"Does the vehicle begin to skid on glaze ice?"}
    H --> I
    I -->|"Cha"| J["Exit highway at next safe ramp and wait for solar warming or salt trucks"]
    I -->|"Yes: Oversteer or Understeer"| K["Stay off brakes, look at open path, steer smoothly into slide, shift to Neutral"]
    K --> J

How supercooled water droplets flash-freeze on impact¶

(Gulf of Mexico)

As soon as these supercooled liquid droplets strike a solid object, such as a concrete bridge deck, a painted highway line, an aluminum road sign, or the leading edge of your car, mechanical contact breaks their surface tension and provides instant nucleation. The droplet freezes in a fraction of a second, releasing latent heat of fusion and bonding tightly to the cold substrate.

Glaze ice (black ice) versus rime ice deposit mechanisms¶

Depending on droplet size, wind speed, and how far below freezing the road surface sits, freezing fog produces two distinct ice formations that every winter driver must recognize:

Why bridge decks and overpasses freeze 30 to 90 minutes before earthen roads¶

The roadside warning sign reading "Bridge Ices Before Road" is grounded in heat transfer physics:

1. Absence of geothermal ground insulation: Normal highways sit on compacted soil and deep earth. That ground acts as a thermal reservoir that conducts warmth upward into the asphalt, delaying freezing when air temperatures drop.
2. Five-sided convective cooling on bridges: An elevated bridge deck or viaduct has zero earth underneath it. Sub-freezing winter air and freezing fog swirl across the top driving surface, along both outer concrete parapets, and directly across the exposed steel or concrete support girders underneath. Heat escapes from both the top and bottom of the slab at more than double the rate of a ground-level road.
3. Thermal conductivity of structural steel and concrete: Bridge decks built from reinforced concrete or steel orthotropic plates conduct heat away far faster than dark asphalt. Even when the earthen highway leading up to a bridge is 2 degrees Celsius (35.6 degrees Fahrenheit) and wet, the suspended bridge deck 10 meters (33 feet) ahead can sit at minus 3 degrees Celsius (26.6 degrees Fahrenheit) coated in glare ice.
4. The expansion joint mechanical trap: Every bridge features steel finger joints or rubberized expansion strips at both ends where the road meets the suspended span. These bare steel plates freeze earliest of all. If a driver is turning slightly or accelerating when their tires cross the expansion joint, the sudden drop in friction between asphalt and iced steel can kick the vehicle sideways immediately.

Six early warning signs that freezing fog is glazing the road¶

Because your car's dashboard thermometer measures air temperature inside the front grille area rather than actual pavement temperature, you must use outside physical clues to detect active road glazing before you need to brake or steer.

• Feathery white rime buildup on your side mirror housings and radio whip antenna: Glance at the leading plastic edge of your outside rearview mirrors every two minutes when driving in cold fog. If you see a rough, frosty white line or translucent ice lip building on the mirror edge, supercooled droplets are actively freezing on impact.
• Amathayi angaphambili ayayeka ukukhahlela inkungu yamanzi: Enkungwini emanzi engaqandi, amathayi ezimoto namaloli angaphambili ajikijela imfucumfucu engapheli yesifutho samanzi. Uma umgwaqo usabukeka umnyama futhi ucwebezela ngaphansi kwezibani, kodwa amathayi angaphambili avele agingqike nge-zero spray noma inkungu ngemuva kwawo, umswakama osemgwaqeni uvaleleke eqhweni elimnyama; bona flash iqhwa kanye black ice ukushayela.
• Wiper blades begin chattering, streaking, or lifting off the glass: When supercooled fog hits the metal or plastic hinges of your windshield wiper blades, ice locks the flexible joints stiff so the rubber blade can no longer conform to the curve of the windshield. Instead of wiping cleanly, the blade skips across the glass and smears a milky film of frozen fog across your line of sight.
• Izixwayiso zedeshibhodi zokuthi "Isexwayiso Sokungqubuzana Phambili / Inzwa Yokuhamba Ngesikebhe Eguqukayo Ikhubazekile": Izimoto zesimanje zikhweza izinzwa ze-radar yama-millimeter-wave ngemuva kophawu lwegrille yangaphambili namakhamera abonakalayo ngemuva kwe-windshield ephezulu. Inkungu eqandayo yakha igobolondo leqhwa elingu-2-to-5-millimeter (0.08-to-0.2-intshi) leqhwa le-rime ngaphesheya kwekhala elingaphambili ngaphakathi kwamaminithi, ivimbe i-radar beam futhi icuphe i-chime yephutha lenzwa kuqoqo lakho lensimbi. Leyo chime iyisexwayiso esiqinisekile sokuthi imoto yakho iqongelela iqhwa.
• Frost plumes on roadside chain-link fences, utility wires, and guardrail posts: Watch the steel W-beam guardrails and mile-marker posts along the shoulder. If they look fuzzy, chalky white, or coated in delicate ice needles pointing into the wind, the bridge decks ahead are glazed.
• Sudden quietness in cabin road noise: When your tires roll from damp textured asphalt onto a sheet of freezing-fog glaze, the steady hissing sound of water droplets splashing inside the wheel wells cuts out abruptly.

Step-by-step driving tactics for freezing fog and bridge decks¶

Driving safely through a freezing fog corridor requires separating every driving input so you never ask your tires to brake, accelerate, and turn at the same time.

1. Managing vehicle lighting and visibility in sub-zero fog¶

Visibility in dense freezing fog routinely drops below 100 meters (330 feet) and can plunge below 15 meters (50 feet) in river valleys and industrial basins:

• Switch headlights manually from "Auto" to "Low Beam ON": Many vehicles' automatic light sensors see bright white fog during daytime or twilight and keep the main headlights off, activating only weak front daytime running lights while leaving your rear red taillights completely unlit. Turn the physical headlight dial to the Low Beam ON position so trailing traffic can see your taillights before they hit your rear bumper.
• Engage front fog lamps and rear high-intensity fog lights (where equipped): Front fog lights sit low on the bumper and project a wide, flat beam underneath the fog deck to illuminate the painted road edges without reflecting back into your eyes. In Europe, the United Kingdom, and on many imported vehicles globally, turn on your rear fog light when visibility drops below 100 meters (330 feet), then switch it off once visibility improves so you do not dazzle drivers behind you.
• Never use high beams: High-beam headlights shine upward at a parallel angle into the suspended fog droplets, scattering light directly back into your retinas (backscatter glare) and cutting your effective sight distance in half.
• Follow the right-edge line (or left-edge line in left-hand traffic countries) rather than the center line: When oncoming headlights glare through freezing fog, staring at the center divider line ruins your contrast vision and pulls your steering toward oncoming traffic. Focus your gaze slightly downward along the outer painted fog line or curbside reflector posts to keep your vehicle centered in its lane.

2. How to cross an iced bridge deck or overpass safely¶

Whenever you spot a bridge abutment, highway overpass sign, or creek crossing ahead during freezing fog or near-freezing temperatures, execute this four-step bridge crossing drill:

1. Decelerate on the earthen roadbed before the bridge: Complete 100 percent of your braking and speed reduction while all four tires are still rolling on the earth-supported highway 150 to 300 meters (500 to 1,000 feet) before the bridge approach slab.
2. Align your wheels straight before the first expansion joint: If the bridge sits on a curve, set up a gentle, constant steering arc with the widest possible radius before your front tires cross the metal expansion joint, and avoid making sudden mid-span steering corrections.
3. Coast across with neutral or feather-light throttle: As you cross the bridge deck, keep your foot completely off the brake pedal and either coast with zero throttle or hold just enough feather-light gas pedal pressure to match your rolling speed so the drive wheels neither push nor drag against the ice.
4. Never change lanes on a bridge deck: The raised ridge of frozen slush, rime ice, and reflective plastic lane markers between highway lanes acts like a tripwire on an icy bridge. Stay centered in a single lane until all four tires have crossed the far expansion joint back onto the earthen roadbed.

3. Preventing windshield and headlight freeze-over while moving¶

In severe freezing fog, supercooled droplets can coat your windshield faster than standard wiper fluid can clear it:

• Blast the front windshield defroster at maximum temperature and high fan speed: Keep the glass surface warm enough that supercooled fog droplets melt upon impact rather than freezing into a glaze sheet.
• Turn OFF the "Recirculate" air button: Recirculating cabin air traps the warm, humid breath of the driver and passengers inside the car, causing the inside of the cold windshield to fog or frost over while the outside is icing from freezing fog. Always pull in fresh outside air with the A/C compressor active (which dehumidifies the air before heating it).
• Do NOT spray summer or weak washer fluid onto a sub-zero windshield at highway speed: If your reservoir contains water or summer bug-wash fluid rated only to 0 degrees Celsius (32 degrees Fahrenheit), spraying it onto a wind-chilled windshield in freezing fog will instantly coat the entire glass in an opaque sheet of solid ice, blinding you at 80 km/h (50 mph). Always fill your reservoir before winter with minus 30°C to minus 40°C (minus 22°F to minus 40°F) de-icing methanol or propylene glycol washer fluid.
• Check recessed LED headlights at fuel stops: Unlike older halogen bulbs that generated intense heat and melted ice off the headlamp lens automatically, modern LED headlights run cool to the touch. In freezing fog or rime icing, a crust of opaque white rime ice can build over LED headlight lenses within 30 minutes of highway driving, cutting your forward illumination by 70 percent. Stop in a safe lit parking lot to scrape and de-ice LED headlight lenses and tail lamps.

Skid recovery on glazed bridge decks and curved flyovers¶

Even cautious drivers can hit an unexpected sheet of invisible glaze ice on an elevated highway ramp or shaded river bridge. How you move your hands and feet in the first 1.5 seconds determines whether you glide straight out the other side or spin into the bridge parapet.

Ungasinda kanjani ekuqubukeni kwenkungu enguthelawayeka enezimoto eziningi¶

Ezinye zezinhlekelele zomgwaqo omkhulu ezibulala kakhulu emlandweni, ezihilela izimoto ezingu-50 kuya kwezingu-150 ekuphenduleni kochungechunge olulodwa, zenzeka lapho ibhange lendawo eliminyene inkungu ebanda kakhulu noma inkungu enkulu lihlala liwela ibhuloho eliphakathi kwezifunda noma indlela yomfula ekuseni kakhulu. Abashayeli bangena odongeni olumhlophe ngo-100 kuya ku-120 km/h (62 kuya ku-75 mph), bathole kanyekanye ukuthi abakwazi ukubona ngale kwe-hood yabo nokuthi indlela egandaywe ngamatshe ngaphansi kwenkungu iyiqhwa eliqinile elimnyama, bese beshelela kulayini omile ngaphambili.

Kuyini "inkungu enkulu" futhi kungani yakheka eduze kwamaxhaphozi futhi ibhulasha imililo?¶

Izazi zezulu zichaza inkungu enkulu njengengxube yendawo yentuthu, izinhlayiya ezivuthayo, nomhwamuko wamanzi abandayo onciphisa ukubonakala okuvundlile kube ngaphansi kwamamitha angu-3 (amafidi angu-10). Lapho izinto eziphilayo ezimanzi (ezifana ne-marsh peat, ukushiswa kwensimu yezolimo, izinqwaba ze-slash slash, noma izinsimbi zesitimu sezimboni) kukhipha izigidigidi zama-nuclei angabonakali esigodini esikhipha amanzi abandayo ngobusuku obubodwa, umhwamuko ubambana eduze kwayo yonke izinhlayiya zentuthu. Uma amazinga okushisa ehla ngaphansi kwezinga-qhwa, le nkungu enkulu ibeka iqhwa elimnyama eliwugqinsi, elinamafutha elifakwe umule kuwo wonke umgwaqo omkhulu kuyilapho lehlisa ukubonakala libe uziro ngokuphelele phakathi kwebanga lamamitha angu-50 (165 amafidi).

Isinyathelo ngesinyathelo sokusinda uma uhlangabezana nodonga lwenkungu noma inqwaba ngaphambili¶

1. Sebenzisa ukuqwashisa nge-acoustic ngokuhlephula iwindi lomshayeli wakho: Uma ukubonakala kwehla ngaphansi kwamamitha angu-50 (amafidi angu-165) enkunguni eqandayo, yehlisa iwindi lomshayeli wakho ngamasentimitha angu-1 ukuya kwangu-2 (0.5 kuya ku-intshi elingu-1) bese uvala umsakazo. Enkungwini eminyene,** uzozwa** ukukloloda kwamabhuleki omoya, insimbi ephukayo, nokuqhuma kwezimpondo kwenqwaba engamamitha angu-300 ukuya kwangu-500 (amafidi angu-1,000 ukuya kwangu-1,650) ngaphambi kokuthi ubone amalambu angemuva phakathi kokumhlophe.
2. Ungalokothi ume emzileni wohambo osebenzayo uma ungavinjwanga: Uma udidwa inkungu eqinile eqandisayo, ungayimisi imoto yakho phakathi nomgwaqo onguthelawayeka. Qhubeka uhamba kancane ngenkathi uqondisa umugqa wonqenqema opendwe ngesandla sokudla uze ukwazi ukudonsa ngokuphelele umgwaqo omkhulu ungene kumpambuko ophumayo, indawo yokuphumula, noma kude ngale kwehlombe eligandayiwe ngemuva kwe- guardrail.
3. Uma udonsa ehlombe, CISHA amalambu akho bese ususa unyawo lwakho endaweni enyathela ibhuleki: Enkungwini evala amehlo, abashayeli abasondelayo bahlushwa umthelela wenundu (ukulungiswa okuqondiwe): bakhiyela amalambu angemuva abomvu noma amabhuleki emoto epakwe ehlombe, bacabange ukuthi imoto ishayela emgwaqeni wohambo oqondile iqonde ngemuva. Uma uphoqeleka ukuthi ume kude nehlombe lomgwaqo kunenkungu eminyene, ungene ePaki, usethe ibhuleki lokupaka, susa unyawo lwakho ku-pedal yebhuleki lesevisi, vala amalambu akho amakhulu, bese ushiya izibani ezine-amber hazard zakho kuphela zishaya ngamandla.
4. Uma inqwaba ivimba umgwaqo ngaphambili, jikela ngasehlombe langaphandle elithambile, usebe lweqhwa, noma utshani obumaphakathi ngaphambi kokuthinta: Ungasheleli uqonde ngemuva kwe-semi-truck trailer, lapho ama-underride impacts eyinhlekelele. Khomba i-engeli engashoni ngasemseleni ongaphandle onotshani, i-snowbank ethambile, noma umgoqo wekhebula ukuze ukhuhle amandla e-kinetic ngaphandle komzila omkhulu lapho amaloli asindayo eshelela khona.
5. Hlala ubophe ibhande ngaphakathi kwemoto yakho kuze kube yilapho igagasi lokuphahlazeka liphela, noma phuma ngokushesha udlule endaweni yokuqapha uma kukhona iwindi elihlanzekile:
6. Uma izimoto zishayisana eduze kwakho noma usebhulohweni eliphakeme elingenayo indlela yabahamba ngezinyawo: Gcina ibhande lakho livaliwe liqinile, gcina izandla zakho ziphansi esondweni (ukuze ukuthunyelwa kwe-airbag kungajikijeli amahlombe akho ebusweni bakho), cindezela ingemuva lekhanda lakho ngokuqinile ngokumelene ne-headrest, futhi ubuke izibuko zakho kuze kube yilapho ithrafikhi ima phezulu.
7. Uma imoto yakho izoma ngemuva kwenqwaba yenkungu kuthelawayeka osezingeni eliphansi, kunegebe elithulile elingenazo izibani zangaphambili ezisondelayo noma ukuduma kwenjini, futhi uthango lobumba luhlala khona kanye ngaphandle komnyango wakho womgibeli: Khumula wonke umuntu ongaphakathi, shiya zonke izikhwama namajazi ngemuva, phuma eceleni uqhelelene nesiminyaminya esiqhamukayo, ugibele uqonde phezu kwamamitha angu-50, ugibele phezu kwetrafikhi ezayo* (165 amafidi) phezulu konqenqema lwegquma KANYE namamitha ayi-100 (330 amafidi) phezulu nomfula/kude nendawo yokuphahlazeka**. Ungalokothi ume phakathi kobhampa bezimoto eziphahlazekile futhi ungalokothi uhlale ehlombe eligandayiwe.

Ayehluleka kanjani amakhemikhali okwelapha emgwaqeni phakathi nemicimbi yenkungu eqandayo¶

Abashayeli abaningi bezimoto bacabanga ukuthi uma bebone iloli likamasipala likasawoti liphatha umgwaqo omkhulu emahoreni amabili ngaphambili, amadekhi ebhuloho aphephile eqhweni elimnyama. Ukuqonda ukuthi i-de-icing brines ihlambuluka kanjani futhi iphinde ibe yiqhwa kuvimbela ukuzethemba okungamanga:

• Ukuhlanjululwa kwamanzi ngokufaka inkungu okuqhubekayo: Uketshezi lwamanzi okwelapha ngaphambi kokwelashwa (imvamisa amaphesenti angu-23 e-sodium chloride noma isixazululo se-magnesium chloride esifuthwe ngemigqa ewumngcingo ezansi nemizila) sisebenza ngokwehlisa indawo yokuqandisa yamanzi. Kodwa-ke, inkungu ebanda isikhathi eside noma ukuconsa okubandayo kubeka umswakama omusha endaweni egandayiwe. Uma ukugcwala kukasawoti kuncibilika ngaphansi kwephesenti elibalulekile, ingxube ye-brine exutshiwe iba yiqhwa kungazelelwe ezingeni lokushisa elifudumele kakhulu, idale ifilimu ebukhali kakhulu ye-slush yamakhemikhali efriziwe.
• Umoya ovunguzayo emabhulohweni aphakeme: Lapho abasebenzi bomgwaqo onguthelawayeka besakaza izinhlamvana zosawoti omisiwe endaweni ephakeme yebhuloho ngaphambi kokuba kube yiqhwa, izivunguvungu ezinqamulayo kanye nomoya onyakazayo wokuvuka kwamaloli acishe abe ngu-100 km/h (62 mph) aphephule amaphesenti angama-60 amakristalu kasawoti owomile ngaphambi kokuba afike kumswakama oshelelayo webhuloho.
• I-minus 9°C (15°F) ye-sodium chloride cutoff: Ngaphansi kokususa ku-9 degrees Celsius (15 degrees Fahrenheit), usawoti we-rock ojwayelekile uba kancane kakhulu ukuze uvimbele inkungu ebanda kakhulu ukuthi icwebezele; bona iziphepho zasebusika kanye namakhaza amakhulu.

Ukulungiswa kwemoto yangaphambi kohambo lwenkungu ebandayo namaphasishi eqhwa amnyama¶

Uma uhambo lwakho lwansuku zonke noma umzila wohambo lwasebusika uwela amabhuloho emifula, imigwaqo egudla ugu, izigodi zezintaba, noma izigodi zezolimo ezithambekele ekubeni nenkungu eqandayo, lungisa imoto yakho ngaphambi kokushiya indlela yokungena:

• Faka amathayi eqhwa e-Three-Peak Mountain Snowflake (3PMSF) noma amathayi eqhwa e-Nordic studless: Amathayi avamile esizini yonke aqina ngaphansi kuka-7 degrees Celsius (45 degrees Fahrenheit) futhi alahlekelwe kufika kumaphesenti angu-50 okubamba kwawo amabhuleki eqhweni elicwebezelayo lesitezi sebhuloho.
• Linganisa ama-wiper ama-silicone esitayela sasebusika: Faka esikhundleni sezisuli zozimele zensimbi eziveziwe (ezipakishwa ziqinile neqhwa eliwu-rime kumajoyinti e-pivot) ngezisusi zasebusika ezivalwe ngoxhaxha olulodwa, futhi uphathe i-windshield yangaphandle ngengilazi ene-hydrophobic ukuze amaconsi apholile abe nobuhlalu ngokuhlanzekile.
• Gcwalisa ithangi lewasha ngokususa 40°C (minus 40°F) de-icing washer fluid: Gcina ijeke eliyisipele elingu-4-litre (1-gallon) esiqwini, eduze kwethusi elibambise isikhathi eside noma elisindayo le-polycarbonate ice scraper kanye nebhodlela le-spray le-isopropyl alcohol de-icer yezingidi zezicabha eziqandisiwe ze-LED, izingidi zezibuko eziqandisiwe.
• Pakisha ikhithi yokusinda edonsa kanzima ebusika: Phatha amavesti akhanyayo e-ANSI/ISO abonakala phezulu awo wonke umgibeli (agcinwe ebhokisini legilavu noma emaphaketheni omnyango, angangcwatshwanga esiqwini), amaflashi omgwaqo we-amber asebenza ngebhethri, izikhwama zokulala ezingaphansi kweziro noma izingubo zoboya, izifudumezi zezandla zamakhemikhali, amanzi, ne-kilogram eyi-1 kilogram yokudla i-traction grit; bona imoto yezimo eziphuthumayo.

Ukuthatha ikilasi lokushayela elilula lokushushuluza ebusika kanye nokuqedela izifundo ezingokoqobo Zosizo Lokuqala kanye ne-CPR evela kwa-Red Cross, i-St John Ambulance, noma umhlinzeki wezokuphepha wendawo kukulungiselela ukuba uphathe kokubili amaslayidi ezimoto kanye nokuhlukumezeka komgwaqo kuze kufike abasebenzi bezimo eziphuthumayo ebusika.

Imibuzo ejwayelekile ukubuzwa¶

Kungenzeka kanjani ukuthi kube nenkungu eqandayo futhi imboze umgwaqo eqhweni lapho kungenamvula noma likhithika?¶

Kuvela inkungu eqandayo lapho amaconsi amancane amanzi awuketshezi ehlala elenga emoyeni ozolile ophole ngaphansi kuka-0 degrees Celsius (32 degrees Fahrenheit). Ngenxa yokuthi amaconsi ahlanzekile asemoyeni angenayo i-nucleus eqinile yokuqalisa ukukhula kwekristalu yeqhwa ngenkathi entanta emoyeni, ahlala oketshezini olupholile kakhulu kuze kufike ku-minus 10 degrees Celsius (14 degrees Fahrenheit) noma abandayo. Ngokushesha lawo maconsi apholile kakhulu athinta indawo eqinile yomgwaqo, indawo yebhuloho, i-Guardrail, noma i-windshield, ukuthintana komshini kubangela ukubanda okuphazima kweso, ukwakha ishidi eliqhubekayo leqhwa elimnyama noma i-rime ice elimhlophe ngaphandle kwekhekheba leqhwa elilodwa eliwa esibhakabhakeni.

Kungani amabhuloho nezidlula zemigwaqo emikhulu ziba yiqhwa ngokushesha kunemigwaqo evamile?¶

Imigwaqo ewuthelawayeka ejwayelekile ihlala ngqo phezu kwenhlabathi kanye nedwala elichotshoziwe, elisebenza njengengubo yokulala eshisayo efaka ukufudumala komhlaba okugciniwe phezulu ku-asphalt. Amabhuloho aphakeme, ama-flyover, kanye nemigwaqo kumiswe ngokuphelele emoyeni, okuvumela umoya obandayo kanye nenkungu eqandayo ukuthi ijikeleze kuzo zombili indawo yokushayela kanye nezinsimbi zesakhiwo eziveziwe namagida kakhonkolo ngaphansi. Ngenxa yokuthi amabhuloho alahlekelwa ukushisa okuvela ezinhlangothini ezinhlanu ngesikhathi esisodwa futhi awanakho ukusekelwa kwe-geothermal, izinga lokushisa elingaphezulu kwawo lehla ngaphansi kuka-0 degrees Celsius (32 degrees Fahrenheit) imizuzu engu-30 kuya kwengu-90 ngaphambi kokuba umbhede wobumba oseduze ube yiqhwa.

Ingabe kufanele ngisebenzise amalambu ami aphakeme kakhulu noma izibani eziyingozi ngenkathi ngishayela phakathi nenkungu eqinile eqandayo?¶

Ungalokothi usebenzise izibani zangaphambili ezinebhimu ephezulu enkungu, ngoba iphrojekthi yemishayo ephezulu ikhanyisa phezulu ibe amaconsi amanzi amisiwe futhi iphinde ibonise ukuxhopha okuyimpumputhe kubuyela emehlweni akho. Hlala ukhanyisa izibani zakho ze-low-beam namalambu enkungu. Hlola imithetho yangakini yethrafikhi mayelana nezikhanyisi eziyingozi: izindawo eziningi zeluleka ukuthi kucishwe izibani eziyingozi uma wehlisa ijubane kungazelelwe ukuze uxwayise umkhondo wethrafikhi, kuyilapho uzishiya lapho ushayela kancane ukuze izimpawu zokuphenduka zihlale zisebenza.

Yini okufanele ngiyenze uma imoto yami iqala ukushibilika ngenkathi ngiwela idekhi yebhuloho elineqhwa?¶

Gcina izinyawo zombili zisuka kude kwi-pedal yebhuleki kanye ne-accelerator, bese ukhansela i-cruise control ngokushesha ngebhathini lesiteringi uma ivuliwe. Ukubhuleka edekhini yebhuloho elicwebezelayo kukhiya noma kuthunaza amathayi futhi kucekele phansi isiteringi. Bheka phambili kude nendawo evulekile yomzila wakho lapho ufuna imoto iye khona, futhi wenze izinguquko ezibushelelezi, ezincane zesiteringi lapho ingemuva lishelela khona (noma uqaqa isondo kancane liqonde ngqo uma amathayi angaphambili alima ebhulohweni eligobile). Uma amasondo akho okushayela ehudula eqhweni, shintsha uhlanzeke uye ku-Neutral noma cindezela i-clutch uze uwele ijoyinti lokunweba elikude ubuyele endaweni egandayiwe.

Imithombo ihloliwe¶

• Isevisi Yesimo Sezulu Kazwelonke (NWS) kanye Nokuphathwa Kwe-Oceanic Ne-Atmospheric Kazwelonke (NOAA, United States): Inkungu Ebanda, I-Super-Fog, ne-Bridge Ice Hazards
• I-Federal Highway Administration (FHWA, United States): Uhlelo Lokulawulwa Kwesimo Sezulu Lomgwaqo: Imodeli Yezinga Lokushisa Eligandaywe, I-Bridge Deck Icing, kanye Nezinhlelo Zesexwayiso Ezibonakala Kaphansi
• I-Met Office kanye Nemigwaqo emikhulu Kazwelonke (e-United Kingdom): Ukushayela Kunkungu Ebanda, Hoarfrost, kanye Nezimo Zeqhwa Ezimnyama (Imithetho Yekhodi Yomgwaqo 226 kuya ku-237)
• Ezokuthutha e-Canada ne-Environment and Climate Change Canada (Canada): Ukuphepha Kokushayela Ebusika, Ukucwebezelisa Kwenkungu Okupholile, kanye Namazinga Wokudonsa Isondo
• I-World Meteorological Organization (WMO): I-International Cloud Atlas: Izincazelo Zenkungu Ebanda, i-Rime Ice, i-Glaze, ne-Hoarfrost

Iziqondiso ezihlobene¶

• Ukuqhwaza kwe-Flash nokuphepha kokushayela kweqhwa elimnyama
• Iziphepho zeqhwa, imvula eshubisa umnkantsha, nokuwa kwentambo kagesi
• Iziphepho zasebusika kanye namakhaza amakhulu
• Ukuphahlazeka kwemoto: yini okufanele uyenze ngokushesha
• Ikhithi yezimo eziphuthumayo yemoto