A high-speed bullet train, such as the Japanese Shinkansen or the French TGV, requires a significant distance to come to a complete stop due to the immense kinetic energy it carries at speeds of 300 km/h (186 mph) or more. Under normal, non-emergency conditions, a bullet train typically takes about 3 to 5 minutes and a distance of approximately 4 to 6 kilometers (2.5 to 3.7 miles) to come to a gradual, passenger-friendly stop at a station. In the event of an emergency, such as the detection of an earthquake or an obstruction on the track, the trains use powerful regenerative and mechanical braking systems to reduce this distance significantly. An emergency stop from full speed can still take roughly 60 to 90 seconds and cover a distance of about 3 kilometers (1.8 miles). Because of these long stopping distances, high-speed rail networks rely on advanced signaling and early-warning systems (like the UrEDAS system in Japan) to trigger braking well before a hazard is reached. This is one of the primary reasons why bullet trains operate on dedicated, grade-separated tracks without level crossings, as any sudden obstacle would be impossible to avoid at such high velocities.