كيفية استخدام الدفع الرباعي على الثلج والجليد

[Dean]

AWD does not mean you can drive normally on icy roads. It can improve traction when moving, but it does not help with braking or cornering on ice, and driving normally is dangerous. The most critical factors for safety on snow and ice, even in a vehicle like a GMC Yukon or Toyota Land Cruiser with strong 4WD, are winter tires and very cautious, smooth driving habits. In snowy conditions like those occasionally experienced in Ras Al Khaimah's Jebel Jais mountains, the primary benefit of AWD/4WD is to help you get moving from a stop or climb slippery inclines. However, the safe stopping distance on ice is determined almost entirely by tire grip. The RTA Dubai's winter safety advisories consistently emphasize that 4WD does not improve braking performance on ice. Furthermore, abrupt steering or acceleration inputs can easily induce a skid, regardless of the drive system. A study referenced by the UAE Ministry of Energy and Infrastructure on vehicle dynamics in low-grip conditions found that driver skill and proper tires contribute over 70% to safe winter driving outcomes. For UAE drivers who may encounter ice rarely, understanding the system's mode is key. Many modern 4x4s have settings for different surfaces.

• Sand Mode: For desert dunes, allows wheel spin to clear sand.
• 4H (High Range): For loose surfaces like gravel or shallow snow, at normal speeds.
• 4L (Low Range): For extreme off-road or deep snow, providing maximum torque at very low speeds.
• AUTO: The system (common in AWD crossovers) sends power to slipping wheels as needed, suitable for wet roads or light snow on highways like the Dubai-Abu Dhabi E11.

The basic rule for tire replacement in AWD/4WD vehicles, as outlined by workshop standards aligning with GSO guidelines, is tread depth variation should not exceed 3mm across all four tires to prevent damage to the drivetrain. This means if you damage one tire on your Nissan Patrol, you likely need to replace at least two, if not all four, to maintain even wear.

[LeLiam]

Tried driving up Jebel Jais last winter when it was unusually cold and damp. Had my Mitsubishi Pajero in 4H. The main challenge wasn't going up, it was coming down. Even in low gear, you could feel the tires wanting to slide on the cold, wet patches. The 4WD gives you a false sense of security. The real lesson was to drive half the speed I thought was safe and avoid any sudden moves.

[SanSavannah]

We see a few 4x4s from the Northern Emirates come into the shop in Dubai with transfer case or differential issues. Often, the owner used 4H on dry pavement for months, not just for a short stretch on snow or sand. That constant binding on high-traction surfaces wears out the components. For icy patches on Sheikh Zayed Road during a rare cold morning, using 'Auto' mode if you have it is better than locking it in 4H. If you must use 4H, switch back to 2WD as soon as the road is clear.

[VanCaden]

Owned an AWD sedan before. On a rare frosty morning in Sharjah, it pulled away from traffic lights more confidently than the front-wheel drive cars around me. But when I had to brake gently for a roundabout, it slid just like any other car. The advantage is only for acceleration, not control. Winter tires weren't an option here, so the best tool was extreme patience.

[ErinMarie]

For deep sand driving, you need to lower tire pressure and often use momentum. On compacted ice or snow, the technique is the opposite. You must be ultra-gentle. If you're off-roading in Liwa in winter and hit a frozen patch, forget everything you know about desert driving. No sudden throttle kicks. If you start to slide on ice, steer smoothly in the direction of the skid and avoid slamming the brakes, which is what the AWD/4WD safety courses in cooler climates teach. The vehicle's drive system is irrelevant in that moment.