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

Table 12: Existing Passenger Circulation Facilities
Element Required Existing
Platform Escalators 2 2
Platform Elevators* 2 1
Faregate Aisles 2 4
Farecard Vendors 1 7
* While only one platform elevator per mezzanine is required
for ADA compliance, current practice by Metro is to provide two
platform elevators per mezzanine.
Table 13: 2012 Emergency Egress
NFPA
Standard
Morning
Peak
Afternoon
Peak
Measure (minutes)
Time to clear platform 4.0 3.6 5.2
Time to point of safety 6.0 5.1 6.7
The number of faregates at Naylor Road Station exceeds
the number of required faregates based on observed
ridership (see Table 12). However, faregate queuing
is still commonplace during peak periods based on
observations, suggesting additional faregates are needed
to decrease entrance and exit times. Two stairways, each
of which is paired with an escalator, provide vertical
capacity beyond the available capacity of the two
escalators. The station falls short of elevator redundancy,
as two per platform are required per current Metro
practice.
The station partially meets emergency egress standards
set by the National Fire Protection Association (NFPA)
Standard for Fixed Guideway Transit and Passenger Rail
Systems 2007 (NFPA 130), which requires that in an emergency situation the platform can
be cleared of passengers within four minutes and that all passengers can reach a point of
safety within six minutes. Evacuation time analysis is based on a worst-case-scenario with
peak-direction trains containing twice the typical number of passengers to simulate a missed
headway. Metro uses these guidelines as design goals, not requirements, when modifying
station facilities to increase their emergency safety capabilities.
Table 13 shows that all passengers in the afternoon peak cannot clear the station platform and
reach a point of safety—in this case, ground level beyond the mezzanine entrance—within the
NFPA standard. However, emergency egress standards are met during the morning peak.
Figure 35: Naylor Road Station Elements
Naylor Road Metro Station Area Access and Capacity Study | 30