What is the difference between transverse deceleration and longitudinal deceleration on the road?
2 Answers
The differences between transverse deceleration and longitudinal deceleration on the road are as follows: 1. Transverse speed bumps: Transverse speed bumps are rectangular dashed lines, while longitudinal speed bumps are diamond-shaped. Transverse speed bumps are perpendicular to the direction of vehicle travel. Transverse deceleration markings consist of a set of parallel white dashed lines, used to remind drivers to slow down. These markings are typically found in toll plaza areas, exit ramps, or other sections where vehicle speed reduction is required. They can appear as single, double, or triple dashed lines, all perpendicular to the direction of travel. 2. Longitudinal speed bumps: Longitudinal speed bumps run parallel to the direction of vehicle travel. Longitudinal deceleration markings consist of diamond-shaped dashed lines parallel to the lane dividers, creating a visual effect of lane narrowing to psychologically prompt drivers to reduce speed.
Having driven for so long, I often ponder about deceleration. Lateral deceleration refers to the speed reduction that occurs when the car turns, feeling like the sideways movement slows down, such as when making a turn or avoiding an obstacle, the speed decreases to prevent skidding or rolling over. Longitudinal deceleration is the kind you get when stepping on the brake, reducing the forward speed in a straight line, aiming to stop or slow down to avoid a rear-end collision. The biggest difference lies in the direction: lateral deceleration reduces sideways momentum, similar to the effect of centrifugal force, with poorer stability that can easily lead to tire skidding, especially in rainy or snowy conditions; longitudinal deceleration reduces forward momentum, mainly relying on the braking system. In daily driving, before making a wide turn, I ease off the throttle a bit in advance to ensure lateral safety; on straight roads, I focus on braking to control the longitudinal distance. For safety, paying attention to tire pressure and tread is crucial for both, and avoid slamming the brakes when turning to prevent loss of control affecting lateral stability.
