Naylor Road Metro Station Area Access and Capacity - WMATA.com.

Table A-17: NFPA 130 Complete Analysis Inputs (2012 Morning Peak)
Category
Value Units
A AM peak 15-minute factor for station 0.661
B AM arriving half hour train load from Suitland (NB, peak direction) 1,176 passengers
C AM arriving half hour train load from Southern Ave (SB, off-peak direction) 139 passengers
D AM peak systemwide 15-minute factor 0.660
Source: Station Access & Capacity Study
Table A-18: NFPA 130 Complete Analysis (2012 Morning Peak)*
Category
2012 Formula or Source
a Peak Half-Hour Period (entries) 323 Metro faregate data (2012)
b Peak 15-Minute Period (entries) 214 A * a
c Headway for peak direction (minutes) 4.6 Metro
d Headway for off-peak direction (minutes) 6 Metro
e Peak Direction (NB) Entraining Load (entries)… 59 (c / 15) * b * [B / (B + C)]
f … with surge and missed headway factors applied 152 1.3 * 2 * e
g Off-peak Direction (SB) Entraining Load (entries) 9 (d / 15) * b * [C / (B + C)]
h … with surge factor applied 12 1.3 * g
i Peak Direction (NB) Train Load (passengers per train)… 238 (c / 15) * B * D
j … with surge and missed headway factors applied 619 1.3 * 2 * i
k Off-peak Direction (SB) Train Load (passengers per train)… 37 (d / 15) * C * D
l … with surge factor applied 48 1.3 * k
m Total Occupant Load (passengers on platform) 831 f + h + j + l
Time to Clear Platform (minutes) 3.6
Wait Time at Platform Exit (minutes) 1.5
Walk Time to Platform Exit (minutes) 2.1
Platform Clearance Time (minutes) 3.6
Walking Time Down to Mezzanine Level (minutes) 0.6
Wait Time at Faregates (minutes) 0.0
Walking Time to Faregates (minutes) 0.6
Faregate Clearance Time (minutes) 0.6
Wait Time at Mezzanine Exit (minutes) 0.0
Walking Time to Mezzanine Exit (minutes) 0.3
Mezzanine Exit Clearance Time (minutes) 0.0
Time to Reach Point of Safety (minutes) 4.4
* Rounded values
89 | Appendices