Author: | Dean Hall |
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I would like to propose the following logarithmic scale and taxonomy when speaking about mobility and velocity:
Velocity [mph] | Verb | Use |
---|---|---|
2 | Crawl | N/A |
4 | Walk | Walking |
8 | Run | Exercising |
16 | Bike | Bicycling |
32 | Drive | Driving, Streetcar, Light rail (typ.) |
64 | Cruise | Highway driving, Light rail (max.), Commuter rail |
128 | Rail | Standard passenger rail, Sport pilot |
256 | HSR | High Speed passenger Rail, Private pilot |
512 | Fly | Passenger jet |
The power-of-two scale is very useful because the change from one level to the next is always twice as fast (or half the time); making the system easy to remember and appropriate for the modes of transit. For example, if we expect to get drivers out of their cars, a good incentive is a mode that is at least twice as fast as driving in the city or cruising on the highway. Furthermore, the two slots used by Rail and HSR exemplify the significant gap in velocity between driving and flying.
For the sake of clarity and honesty, some terminology should NOT be used during discussion about high-speed rail. For example, "bullet train," is misleading because at around 2000 fps, a bullet travels an order of magnitude faster than the fastest trains. Also, one should not use the term "high speed rail" when referring to velocities below 200 mph. To do so exhibits ignorance of the state-of-the-art in train travel.