Stopping distances
brake.org.uk/assets/images/facts/stopping-distances.jpg
Source: Department for Transport
Need longer stopping distance.
Need longer stopping distance.
A VCR has a tracker, so multiple speeds.
The stopping distance for an 18 wheeler at a railroad track depends on various factors such as the truck's speed, weight, and braking system. However, generally, it is recommended that a fully loaded 18 wheeler traveling at highway speeds should allow for a stopping distance of at least 200-300 feet to safely stop at a railroad track.
Trunking
The distance will increase as the speed (absolute value of velocity) increases.
The distance behind the car you are following
Drives - I assume you are referring to Variable frequency Drives. The drives are useful when a motor needs to rotate at different speeds when in operation with out stopping it.
3 seconds
The highway code typically includes information that is relevant to the majority of driving situations. Stopping distances greater than 70mph are less common and may be considered atypical. Additionally, including stopping distances above 70mph may give the impression that driving at those speeds is safe, which is not necessarily the case. It is always important for drivers to adjust their speed and maintain a safe stopping distance based on the road conditions and their vehicle's capabilities.
By straight lines having different slopes.
Fiber optics.