So, lets go find a lot, some chock, and a tape measure....
Speed
MPH
15 _ goal stop in 8'
30 _ goal stop in 30'
45 _ goal stop in 67'
60 _ goal stop in 95"
I've heard people say they didnt expect "insert whatever" around the corner... well, fact is it could be squirrel, a dog, a person, a parked car, a gravel wash, or a tree.... so, learn to expect that one day the odds will stack up and be against you. Your life depends on how you act/react to said object.
Practice in the straights, practice in a corner and figure out what you and the bike are capable of. One day you will need to know!
For the record, using cones and lines does not take into account the 65 feet you travel at 45mph before you react to a threat! Most peoples reaction time is ~0.45 seconds and this uses a space rapidly the faster you travel!
Be safe!
And yes, the last entry was a crude calculation and may be off.