
The speed limit on highways is generally 120 kilometers per hour. Therefore, the speed of passenger buses is usually between 100 and 110 kilometers per hour. Vehicle speed: Vehicle speed refers to the distance a vehicle travels per unit of time, abbreviated as speed, commonly measured in kilometers per hour or meters per second. Vehicle speed is one of the three parameters used to describe traffic flow and holds significant importance in traffic flow theory research. Classification of vehicle speeds: To suit different purposes, vehicle speeds are mainly categorized into spot speed, segment speed, and design speed. Spot speed is the instantaneous speed of a vehicle passing a specific point on the road. Design speed is the speed established to determine the design indicators of various geometric elements of the road and to ensure their mutual coordination.

I often travel by long-distance coach, usually cruising at speeds of 80 to 100 kilometers per hour on highways, which feels quite stable. City buses are much slower, averaging around 30 to 50 kilometers per hour, with frequent stops and starts that can easily cause motion sickness. Drivers must adhere to speed limits—exceeding them risks police checks, resulting in penalty points and fines, which is quite troublesome. Weather conditions also affect speed; for example, during heavy rain, drivers reduce speed to around 70 kilometers per hour, prioritizing safety. If the bus is crowded, the slowdown is more noticeable—once, when fully loaded, it even dropped to 60 kilometers per hour while climbing a slope. Comfort is crucial for long-distance travel, and a moderate speed with minimal sway makes the journey pleasant and less tiring. I recommend booking tickets early and choosing newer bus models, as their better engines can maintain high speeds and ensure punctual arrivals. Overall, there’s no need to worry about being too slow or too fast—speeds between 80 to 100 kilometers per hour are generally ideal for most travelers.

Having driven passenger buses for twenty years, I know the usual speed on highways is between 90 to 100 kilometers per hour, but the limit is 100 km/h, so you have to be careful not to exceed it. On urban routes, the speed is limited to below 50 km/h due to frequent traffic lights, making it impossible to drive fast. Vehicle condition also affects speed—underinflated tires when heavily loaded can slow you down to 70 km/h, and you need to reduce speed further on hot, slippery roads. If the engine is aging and loses power, climbing hills becomes difficult. Safety is the top priority; always check the brakes and suspension system before departure to ensure everything is in perfect condition. Ensuring passengers fasten their seatbelts is non-negotiable, as higher speeds increase the risk of accidents. Choosing the right route to avoid peak hours helps maintain an ideal speed—around 90 km/h is the most fuel-efficient and ensures punctuality. Experience has taught me that driving with a calm mindset is the safest approach.

In my younger days of car modification, passenger buses typically had speeds ranging from 80 to 100 kilometers per hour. Newer models with powerful engines could reach around 110 km/h, but regulations and weight restrictions kept them below 100 km/h. The transmission system, such as gear ratios, affected acceleration, and speeds could drop to around 60 km/h when climbing hills. Worn tires had poor grip, increasing braking distances at high speeds and making it unsafe. In cold weather, icy roads required reducing speed to about 70 km/h to avoid skidding. Regular checks on throttle and braking components are recommended to improve efficiency and save fuel. When riding, noticeable shaking indicates unstable speed, and choosing low-displacement models is more eco-friendly. Overall, a moderate speed of 80 to 100 km/h is the most reasonable balance between safety and efficiency.

Having focused on traffic safety for many years, I believe speed control for passenger buses is essential. Generally, highways have a speed limit of 100 km/h, while urban areas range from 30 to 50 km/h. Exceeding these limits can easily lead to accidents, especially endangering children and the elderly. In adverse weather conditions like fog, rain, or snow, speeds should be reduced to below 70 km/h, and drivers must obey traffic signals. Fatigue driving or overloading can impair reaction times and increase risks. Regulations should mandate speed-limiting devices on vehicles to safeguard lives. Passengers are advised to fasten seat belts voluntarily, and children should sit in the back for added safety. Regular vehicle inspections can identify hazards, prevent malfunctions, and maintain stable speeds. When traveling, choose reputable companies, as speeds between 80 to 100 km/h are the most reliable and reassuring—avoid chasing speed. Safety first is true efficiency.

Frequently traveling across provinces by coach, an average speed of 90 km/h is most suitable, providing a steady ride on highways. On mountain roads, the speed drops significantly to around 60 km/h with noticeable bumps. Choosing the right model, such as an air-conditioned coach, ensures higher comfort and accurate speed. In hot weather, with scorching road surfaces, speed should be controlled around 80 km/h to avoid tire issues. travel times to avoid congested sections can maintain a smooth 90 km/h journey. I always opt for early morning buses, which are less crowded and faster, making the trip more relaxed. It's advisable to bring some snacks for the road, ensuring the speed is comfortable without delays. Overall, maintaining a speed range of 80 to 100 km/h ensures punctuality and safety, especially with an experienced driver who drives steadily.


