···
Log in / Register

What is the minimum speed limit for the middle lane on a highway?

3 Answers
LaKathryn
09/01/25 3:56am
The minimum speed limit for the middle lane on a highway is 90 km/h. When there are 2 lanes in the same direction, the minimum speed limit for the left lane is 100 km/h; when there are 3 or more lanes in the same direction, the minimum speed limit for the leftmost lane is 110 km/h, and the minimum speed limit for the middle lane is 90 km/h. Precautions for beginners driving on highways: All vehicles are strictly prohibited from exceeding the speed limit when driving on highways. During rainy, snowy, or foggy weather, since highway ramps are mostly curved and sloped, speeding under such conditions can lead to uncontrollable skidding, with unimaginable consequences. Therefore, to ensure driving safety, speeding is strictly prohibited when driving on highway ramps. When driving on highway ramps, reversing is strictly prohibited. Generally, the distance between adjacent highway exits is quite long, and to avoid wasting time, some drivers might choose to reverse on the highway to enter the main road. Extremely severe weather conditions can cause highway traffic jams (especially during heavy snow or thick fog). Some toll stations may still allow vehicles to enter the highway, so before entering, drivers should confirm whether the highway is clear to ensure normal driving conditions. Highway ramps are narrower than the main road (mostly single lanes) and often curved, so overtaking is strictly prohibited on ramps, especially using the far-right emergency stopping lane.
Was this review help?
9
4
Share
DeLeonardo
09/13/25 6:44am
I've been driving on highways for decades, and there's no fixed minimum speed for the middle lane—it depends on local traffic laws and road conditions. In some U.S. states, for example, it's recommended not to go below 40 mph (about 64 km/h), otherwise you risk getting fined or causing a rear-end collision. The middle lane is for normal driving; going too slow can block traffic and increase accident risks. When I was younger, I witnessed chain-reaction crashes caused by insufficient speed, so now I always maintain 80% to 90% of the speed limit. Adjust your speed flexibly in rain or congestion—never stay rigidly slow. Safe driving is paramount: keeping a reasonable speed protects both you and others by allowing smooth overtaking. For new drivers, I recommend downloading a navigation app for real-time speed limit alerts.
Was this review help?
8
4
Share
Expand All
StTravis
10/27/25 7:29am
Hey buddy, this is a pretty practical question! There's no strict regulation on the minimum speed for the middle lane on highways, but in daily driving, don't go too slow. For example, on a road with a speed limit of 120 km/h, driving below 80 might get you flashed by other cars. During long-distance driving, I've found the middle lane is best for maintaining a steady speed. Going below 60 km/h is particularly dangerous and might attract police attention or fines. When traffic is heavy, fluctuating speeds are even worse, so it's advisable to maintain a steady speed around 100 km/h. Additionally, different lanes on the highway serve different purposes—the middle lane is the main lane, and driving too slow not only frustrates you but also affects overall traffic efficiency. Occasionally using cruise control can help maintain a steady pace, making it simple and hassle-free.
Was this review help?
8
5
Share
Expand All
More Forum Discussions

Can automatic transmission cars be shifted to neutral at traffic lights?

Automatic transmission cars can be shifted to neutral when waiting at a red light for more than 30 seconds; for less than 30 seconds, simply apply the brake. Below is relevant information: 1. Precautions for shifting gears in automatic transmission cars: (1) Do not press the accelerator pedal when shifting gears. (2) Do not immediately press the accelerator pedal hard after shifting into gear. (3) The vehicle can only be started in P or N gear. (4) The gear lever must be depressed with the brake to shift out of P gear. (5) Do not shift into N gear while driving to coast. (6) Do not push into P gear while the vehicle is moving. (7) When changing the direction of travel, switching between D and R gears must wait until the vehicle has come to a complete stop. (8) Placing the gear in N while driving prevents the oil pump from supplying oil normally for lubrication, which can cause the internal components of the transmission to overheat and become damaged. 2. Some vehicles now come with an "autohold" function, which is an automatic handbrake. After pressing the button to activate the function, the vehicle will automatically brake once it comes to a stop, eliminating the need to shift out of reverse or drive gears, and the vehicle remains in a parked state. However, not shifting into neutral still poses certain safety risks, such as the vehicle rapidly accelerating if the accelerator is accidentally pressed, which could lead to a collision. Additionally, the auto start-stop function is also suitable for use when waiting at a red light, as it saves fuel to some extent and prevents exhaust fumes from entering the vehicle when the engine is off.
19
0
Share

Can You Still Drive If the Coolant Level Is Below the Minimum Mark in a New Car?

If the coolant level is below the minimum mark, you should not continue driving and must replenish the coolant promptly. If the temperature warning light on the dashboard illuminates, you need to add coolant immediately; otherwise, it may cause damage to the engine. The method for replacing coolant is as follows: Before completely replacing the coolant, conduct a thorough inspection to check for any signs of leaks or cracks in the pipes, with a particular focus on the five-way hose. Coolant flows through the five-way hose and is then distributed to different parts of the car to function. If there are any signs of coolant leakage in this section, replace the hose or reseal the connection as needed. Drain the old coolant, then flush the fluid channels with clean water. Add clean water to the coolant reservoir and continue filling it until water flows continuously through the engine cooling system. Then, start the engine and let it idle for 3 to 5 minutes to circulate the water. Initially, the water draining from the reservoir may appear slightly pinkish. Continue adding clean water until the drained water runs clear. Note: Remember to disconnect the heater hose and drain the water from the heater core. Approximately one hour after draining, add new coolant through the radiator hose. Then, pour another container of coolant into the coolant reservoir until it is nearly full. Start the engine and let it run for about 10 minutes. As some air is expelled from the cooling system, the coolant level will drop slightly. Top up the coolant again until it reaches the "MAXT" mark on the reservoir.
4
2
Share

Is the Prado Air Suspension Useful?

The Prado air suspension is useful. A high-quality SUV must combine the comfort of a sedan with the off-road capability of an SUV, and the air suspension system is the best choice to achieve this goal. Here is more information about the air suspension system: 1. Generally, vehicles equipped with air-adjustable suspension will have ground clearance sensors near the front and rear wheels. Based on the output signals from these sensors, the vehicle's computer determines changes in body height and then controls the air compressor and exhaust valves to automatically compress or extend the springs, thereby lowering or raising the chassis ground clearance. This enhances high-speed stability or improves off-road capability on rough terrain. 2. The air suspension can adjust the stiffness of the car's chassis by controlling air pressure, so high-end models that prioritize both comfort and handling often opt for air suspension. This meets consumer demands in the most reasonable way. 3. Air suspension is also used in sports cars. However, in sports cars, its purpose is not to adjust comfort but to achieve the ultimate handling performance and address some daily inconveniences, such as raising the chassis height when crossing speed bumps. 4. The air suspension can be manually adjusted, and its definition varies depending on the vehicle model. Suspension adjustments are typically made by the driver via center console buttons, or the suspension adjusts automatically based on driving speed. Alternatively, the vehicle may adjust suspension stiffness based on data from related sensors, significantly improving handling and ride comfort.
8
2
Share

How to Deal with Excessive Interior Noise in a Car?

There are four solutions to car noise: 1. Engine Noise: The vehicle engine is a source of noise, and its noise production varies with the engine speed. Solution: High-grade sound-absorbing foam materials can be installed on the engine hood, which not only suppresses vibrations caused by the hood but also absorbs a significant amount of noise, with noticeable effects. 2. Tire Noise: Tire noise is generated by the friction between the tires and the road surface during high-speed driving. The level of tire noise depends on road and vehicle conditions; worse road conditions result in louder tire noise. Additionally, there is a significant difference in tire noise between asphalt and concrete roads. Solution: Tire noise is a type of structural noise, primarily caused by vibrations. The most reasonable solution is vibration damping. Adding damping plates along with sound-absorbing mats can effectively address road and tire noise. 3. Wind Noise: Wind noise occurs when the pressure of the wind encountered during high-speed driving exceeds the sealing resistance of the car doors, allowing it to enter the interior. The faster the driving speed, the louder the wind noise. Solution: Install or replace door sealing strips. Since sealing strips are rubber products, they can age over time, leading to reduced sound insulation and sealing effectiveness. 4. Body Structure Noise: This is mainly influenced by two factors: the vibration transmission method of the body structure and the noise generated by metal components of the body under internal and external forces. Solution: This issue rarely occurs in new cars. It is important to check whether the screws of body components have become loose. Generally, tightening the screws or replacing the parts can resolve the problem.
10
3
Share

What is the tire model of the Kia Cerato?

Dongfeng Yueda Kia Cerato uses Kumho tires, and the tire model is Kumho KH18-195/60R15 88H. Here is more information about this tire: 1. KH18 - refers to a series model of Kumho tires. 2. 195 - indicates that the tread width of the tire is 195mm. 3. 60 - represents the aspect ratio, meaning the section height is 60% of the width. 4. R - indicates that the tire is a radial tire. 5. 15 - shows the rim diameter is 15 inches. 6. 88 - stands for the load index 88, meaning the maximum load capacity of this tire is 560 kg. 7. H - represents the speed rating of 210 km/h. Tips for using tires: (1) When driving uphill, try to use inertia to drive, shift gears timely, and maintain appropriate reserve power for the vehicle. Do not wait until the car stops to start again, so as to reduce tire wear. (2) When turning, control the speed according to the curve conditions. Do not turn at high speed, otherwise the vehicle will generate a large centrifugal force, causing the cargo to tilt and the center of gravity to shift to one side, overloading and dragging a single tire, accelerating wear. At the same time, the tire may be laterally cut by the wheel rim, causing damage.
7
2
Share

What is the original tire size of the Highlander?

The Highlander comes with two original tire size specifications: 235/65R18 and 235/55R20. In 235/65R18, the first number 235 represents the tire width of 235MM, 65 indicates the aspect ratio of the tire section is 65%, meaning the section height is 65% of the width, and 18 stands for the rim diameter of 18 inches. The letter "R" in the middle denotes a radial tire. In 235/55R20, the first number 235 represents the tire width of 235MM, 55 indicates the aspect ratio of the tire section is 55%, meaning the section height is 55% of the width, and 20 stands for the rim diameter of 20 inches. The letter "R" in the middle denotes a radial tire. The Elite trim of the Highlander is equipped with 18-inch aluminum alloy wheels, featuring a robust and simple five-spoke silver design, paired with Dunlop SP-SPOORT-MAXX-050 series tires. The Premium and Platinum trims use identical 20-inch aluminum alloy wheels with slender silver-gray multi-spoke combinations, matched with Yokohama BluEarth-XT series or Dunlop SP-SPOORTMAXX-050 series tires. If you wish to replace the tires yourself, follow these steps: Retrieve the spare tire and jack, place the jack under the vehicle frame near the tire to be replaced, ensuring the jack contacts the metal part of the frame; Raise the jack until it supports the car, making sure the jack is positioned under the vehicle and at a right angle to the ground; Remove the hubcap, loosen the nuts counterclockwise without fully removing them, just enough to eliminate resistance. Keeping the tire on the ground when first loosening the nuts ensures the nuts turn instead of the tire; Turn the nuts counterclockwise until they are loose, repeat this for all lug nuts, then remove them completely; Place the new tire on the hub, carefully aligning the tire rim with the wheel bolts, install the lug nuts, and hand-tighten them until all nuts are snug. The tire replacement is now complete. Besides the model, tires also display the following common data: Tire cord material: Indicated by Chinese pinyin, such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cord tire. Speed rating: Indicates the maximum speed the tire can carry a specified load under specified conditions. Letters A to Z represent certified speed ratings from 4.8km/h to 300km/h. Common speed ratings include: Q: 160km/h; H: 210km/h; V: 240km/h; W: 270km/h; Y: 300km/h; Rim specification: Shows the rim size compatible with the tire for practical use, such as "Standard rim 5.00F".
8
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.