pysähtymismatkasta

Pysähtymismatka, often translated as stopping distance or braking distance, refers to the total distance a vehicle travels from the moment the driver perceives a hazard to the moment the vehicle comes to a complete stop. It is a crucial concept in road safety.

The pysähtymismatka is composed of two primary components: the reaction distance and the braking distance. Reaction distance is the distance the vehicle travels during the driver's perception and reaction time. This is the time it takes for the driver to recognize a danger, decide to brake, and initiate the braking action. Factors influencing reaction time include driver alertness, fatigue, distractions, and alcohol or drug impairment.

Braking distance, on the other hand, is the distance the vehicle travels from the moment the brakes are fully applied until it stops. This distance is influenced by several factors, including the vehicle's speed, the condition of the brakes and tires, the road surface condition (e.g., dry, wet, icy), and the vehicle's weight. Higher speeds significantly increase braking distance, as the kinetic energy of the vehicle increases with the square of its speed.

Understanding pysähtymismatka is vital for maintaining safe following distances on the road. By accounting for the total stopping distance, drivers can avoid collisions when unexpected events occur. The Finnish road safety authorities often emphasize the importance of leaving adequate space between vehicles, particularly in adverse weather conditions, to allow for sufficient stopping distance.