What is the speed limit on highway ramps?
2 Answers
Highway ramp speeds are generally required to be below 40km/h. Here is relevant information about highway ramps: Reasons for the 40km/h speed limit: This speed limit is based on the safe driving speed determined by the ramp's turning radius. According to the centrifugal force formula F=MV²/r, with a fixed turning radius r, the lower the speed of any vehicle with a certain mass, the smaller the centrifugal force it experiences, thereby reducing the likelihood of vehicle rollover. Observant drivers will notice that ramp surfaces are higher on the outside than the inside, which helps counteract the outward tilt caused by centrifugal force. This is particularly beneficial for taller vehicles. Introduction to ramps: Highway ramps are roads located on the right side of highway exits or entrances (typically 150-200 meters in length).
I've been driving for over twenty years, and the speed limit on highway ramps is generally around 40km/h. This is mainly because the ramps have sharp curves and narrow lanes, making it easy to lose control or skid at higher speeds. I've witnessed several accidents where drivers didn't slow down and rushed directly onto the main road, only to fail to avoid collisions and hit the guardrails. Some places even have speed cameras, and getting caught speeding will result in fines and demerit points—totally not worth it. So now, every time I enter a ramp, I slow down to 30-40km/h in advance, check the rearview mirror, and then gradually accelerate to merge. This design isn't just for your safety; it also helps avoid disrupting the flow of traffic on the main road. Remember, driving isn't about who's faster—being steady and safe is the real deal.
