**Station Capacity Calculation - aka "Why the 4400 number cannot be pphpd"**First, what is pphpd?

passengers per hour per direction is the standard measure of transit systems, so when you see "XXXX Metro carries 25,000/hour" that's the number they're using

examples:

Expo Line (Vancouver, Canada): 25,000 pphpd

L1 New York: 36,000 pphpd

Central Line (London UK): 32,550 (35 trains/hour * 930/train)

VEGAS LOOP

What we can assume:

40 second load/unload (cars have seatbelts, every ride I've seen people buckle up)

3 persons/vehicle

West and South stations:

8 load/unload bays

10 sec/minute lost to pedestrians crossing the loop (seriously - check out the attached image)

... 3000 operational seconds /hour

-> car leaves every 5 seconds (40 seconds / 8 bays)

-> 600 cars/hr (3000 / 5)

carrying 3 people each

=

**1800 people per hour (not anywhere near 4400)**Central station:

5 load/unload bays

-> car leaves every 8 seconds

-> 450 cars/hour

carrying 3 people each

=

**1350 people per hour (also not 4400)**--------------------------------

**And I still stand by my "a tad over 3 minutes"**Boffin: "

**a tad over 3 minutes**" (assumed some load/unload time)

Demo Video: 2m39s with no allowance for stopping (1m38s - 4m27

)

LVCVA (2019): "just over one minute"

https://www.prnewswire.com/news-releases/las-vegas-convention-center-makes-history-as-elon-musks-the-boring-company-begins-tunneling-the-destinations-first-underground-people-mover-300959530.htmlLVCVA (2020): "under two minutes"

https://www.prnewswire.com/news-releases/development-of-elon-musks-innovative-underground-transportation-system-achieves-milestone-301059887.htmlLVCVA (2021): "just under two minutes"

https://www.prnewswire.com/news-releases/first-look-inside-elon-musks-underground-transportation-system-beneath-the-las-vegas-convention-center-301266042.htmlReality (from world of concrete - last week)

Video:

depart west station: 5:41

arr south station: 8:54

**Total Time 3m 23s**-------------------------------

**And the Math says...**Theorhetical fastest @ 44mph

What we know:

LVCVA: "Doing 40mph"

LVCVA: "10mph through the central station".

'speed zone' in the middle of 10mph (5m/s) is about 80m long

'speed zone' approaching the end station of a similar distance (note there's a 90 degree corner exiting one end, nasty)

total tunnel distance: 1350m (0.85mi) - (not 1.7mi, that's counting both tunnels)

What we can assume:

Let's give them the benefit of the doubt, and assume 20m/s and 5m/s (about 10% more than their claim, but makes the math easier)

Acelleration: 2m/s² (brisk, not back snapping)

START

accel: 0-20m/s @ 2m/s² for 10 seconds = 100m (ut + ½at²)

steady: 20m/s for 20 seconds = 400m

CENTRAL STATION: SLOW TO 5M/S

decel: 20-5m/s @ -2m/s² for 7½ seconds = 94m

steady: 5m/s for 16 seconds = 80m

CENTRAL STATION: SPEED UP AGAIN

accel: 5-20m/s @ 2m/s² for 7½ seconds = 94m

steady: 20m/s for 20 seconds = 400m

WEST STATION: SLOW TO ENTER STATION

decel: 20-5m/s @ -2m/s² for 7½ seconds = 94m

steady: 5m/s for 16 seconds = 80m (approach)

decel: 5-0m/s @ -2m/s² for 2½ seconds = 6m

END

**time 107s absolutely best case** assuming best case acceleration/deceleration, max speed maintained as long as possible, no impeding merge traffic, and no impeding pedestrian traffic (sad I have to add that 3rd one)

*<sigh> I beginning to feel that people learned nothing from Solar Roadways and Batteriser*