Group Transit  Average Speed Calculator 
by Douglas J. Malewicki, AeroVisions, Inc., July 2, 2002 















INPUTS 



Calculated Conversions 
Length of route (L): 
8.5 
miles 


L: 
44,880 
feet 
Number of stations (N): 
12 

# of accel & decel segments: 
11 
(N1) 
Dwell time at each station (DT): 
60 
seconds 





Max cruise speed (Vmph): 
50 
MPH 


V: 
73.333 
ft/sec 
accel and decel g level: 
0.125 
g's
(1g= 32.2 ft/sec2) 
a: 
4.025 
ft/sec2 











Time to accel to max cruise speed (t): 
18.219 
seconds 
[formula is t = speed/accel] 
Distance used to accel to cruise speed (s): 
668.05 
feet 
[formula is s = 1/2 accel (t^2)] 











Total time in accel and decel (sum of t): 
400.83 
seconds 
[formula is t*2*number of segments] 
Total distance in accel & decel (sum of s): 
14,697 
feet 
[formula is s*2*number of segments] 











Remaining distance at max cruise: 
30,183 
feet 
[formula is L  sum of s] 
Time spent at max cruise speed: 
411.59 
seconds 
[formula is (L  sum of s) / V] 
Extra time unloading/loading at stations: 
720.00 
seconds 
[formula is # of stations * dwell time at
each] 











Total time for trip (Ttotal): 
1,532.41 
seconds 
[Sum of times spent in accel, cruise, decel & dwell]




Ttotal: 
25.54 
minutes 








Ttotal: 
0.426 
hours 
















True average speed (VAVEmph): 
19.97 
MPH 
[formula is length of route/total trip time] 











Rush hour average waiting time: 
120 
seconds 
[half of the 4 minutes between trains] 
Realistic trip time: 
1,652.41 
seconds 





27.54 
minutes 









0.459 
hours 





New average speed: 
18.52 
MPH 
















Other time of day average waiting time: 
240 
seconds 
[half of the 8 minutes between trains] 
Realistic trip time: 
1,772.41 
seconds 



29.54 
minutes 

0.492 
hours 
New average speed: 
17.26 
MPH 











Worst waiting time: 
480 
seconds 
[just missed it & must wait 8 minutes till next train] 
Realistic trip time: 
2,012.41 
seconds 





33.54 
minutes 




0.559 
hours 
New average speed: 
15.21 
MPH 