What does the sawtooth pattern on highways represent?

[KaiLynn]

Highway sawtooth markings indicate variable lanes. Below are important safety precautions for highway driving: 1. Stay informed about road conditions. Before traveling, it's crucial to obtain up-to-date traffic information. If TV and radio reports aren't timely enough, you can call highway information hotlines. This is particularly important during foggy seasons - verify conditions in advance to avoid unnecessary detours or exits. 2. Avoid fatigued driving. Highways' enclosed environments encourage higher speeds, requiring prolonged concentration. The fixed driving posture and monotonous operations can easily cause both mental and physical fatigue. Poor weather conditions further increase accident risks. Therefore, drivers should take breaks approximately every 2 hours to maintain alertness. 3. Never speed. Speeding is a major cause of traffic accidents. During adverse weather, drivers must strictly adhere to speed limits, refrain from aggressive driving or right-side overtaking to ensure everyone's safety and property protection.

[AdalineAnn]

Experiencing a sawtooth-like vibration when driving on the highway is actually quite common. This often indicates uneven tire wear, such as the front tires wearing out faster than the rear ones, or the tire surface becoming uneven due to frequent hard braking and acceleration. At high speeds, the rapid rotation of the tires causes the unevenly worn parts to produce that clicking, sawtooth-like vibration. I’ve personally experienced this—prolonged driving not only makes the steering wheel shake to the point of numbing your hands but can also damage the rims and suspension system. For safety, it’s recommended to regularly check the tread depth of your tires. If you notice obvious unevenness, replace the tires immediately or get a wheel balance. Don’t delay, as worsening vibrations can lead to loss of control at high speeds, which is a significant risk.

[SanKing]

Having driven for over a decade, I'm quite familiar with this high-speed jagged vibration. It usually indicates potential tire issues, primarily caused by uneven wear or inconsistent air pressure. During prolonged sharp turns or heavy loads, tire surfaces can easily chunk or peel, creating a sawtooth-like effect on highways. This not only compromises ride comfort but also accelerates axle wear. I recommend visually inspecting your tires during each refueling—address any abnormalities promptly. If you rarely drive on highways, it might be less urgent, but for frequent high-speed commuters, this demands attention: keep a tire pressure gauge handy, test before monthly inflation, and ensure even pressure across all tires for stable driving.

[DeMaverick]

The car vibrates in a jagged manner at high speeds, which in my opinion directly points to a tire issue. It's commonly caused by small bumps formed by irregular tread wear, creating that harsh, jagged sensation during rapid rotation. Long-term high-speed driving without tire replacement leads to reduced tire grip, especially making the car more prone to skidding on wet roads during rain. Regular maintenance should include checking tire rotation records; if uneven wear is detected, perform a four-wheel rotation or adjust tire pressure to prevent further deterioration. This is crucial for driving safety.