Proper Braking Distance

[ecyoung]

For all passenger routes, is there a way to calculate the Stopping Distance needed to stop at a station using Lap, or Service.

Example:
Scenario: Caltrain
The Blue goal marker states that the next stop is 3.0 miles away, and current speed is 75mph.

Can I usesomething like this Stopping Distance Calculator[www.omnicalculator.com], even though it's for the road conditions

[Metallos]

You can't, iron wheels on iron surface have much less friction than rubber on road. You can get a car to stop in much less than 30 m from 80 km/h (with additional length of reaction time) in ideal conditions. Source (German): https://www.adac.de/rund-ums-fahrzeug/tests/autotest/bremswege-vergleich/

A passenger train? Maybe in 300 m...

Edit: Emergency braking 150 - 200 m (freight much longer on brake setting G (Güter -> freight)), depends much on your train. A calculator (in German): https://bahntechnik-bahnbetrieb.de/verzoegerungsrechner/

Situation in USA (because I play mostly a train simulator with freight routes in South California):
If you approach a red (stop) signal you get speed restrictions much earlier, for example a signal before the red one tells you have to go down to 30 miles/h (yellow -> approach) and one before that you have to go down to 40 miles/h (yellow blinking -> advance approach) on freight.
It depends also on the rail company, especially in USA every has its own signals (what I wrote is for example for Union Pacific).