Right Of Way Flashcards
The track bed may consist of____or_____ and ties
concrete, ballast
the construction of the floating concrete slabs support pads are_____ round by _____thick and support the concrete
6ft round
3 ft thick
the running rails used by metro are continuous welded steel rails
true
in some instances a floating concrete slab may be used to lessen_____and _____
vibration, noise
the running rails act as the _______for the electric traction power system
negative return
_______,______,_______ are all terms for switches
shunt, interlocking, crossover
a _____ is a point where the train can move from one track to another
switch
the switches in the metro system use _______ electric power to operate
AC
switches are controlled by_______and are activated by computer
occ
cribbing used to block a switch should be in ____,_____,________ size with an angled point at one end
2x4,4x4,6x6
_______are a system of measurement along with right of way
chain markers
chain markers are located every_______ feet along with line
100
the letter in the chain marker identifies the _________
route
the first number in the chain marker identifies the ___________
track
the color in the chain marker identifies the __________
line
the series of numbers at the bottom of a chain marker identify the
distance from the center hub
chain markers will be found on ____ along the At grade or elevated right of way and found on______ in the tunnels
post, walls
all tunnels are equipped with ____ lights
fluorescent
the maximum travel distance to any emergency exit shaft will be_____feet
1250
double width box tunnels are______feet wide
29
horseshoe tunnels are carved out of rock and are _____ feet wide
15
the safety walk is _____inches
22
station exit signs have_____ inch red letters on a white background
6”
at grade stations contain_____standpipe systems
dry
Aerial stations contain_____standpipe systems
dry
tunnels contain_____standpipe systems
dry
toe hold and grab rails are located every _____ feet along the safety walkway
30
The (distance to station) or exit signs have a white background with 2 1/4” _____ colored letters
Red
distance to station or exit signs are located about every______feet in the tunnels
800
The (distance to station) exit signs are ____ft in size and are mounted parallel to and on tunnel walls
2x3ft
the remainder of the walkways that appear in the underground portion of the system are______inches below the level of the rail car exit doors
39 inches
box tunnels can be configured in double track widths that have a poured concrete wall between the tracks and the crossover access every ___feet of run
25 feet
box tunnels are dug from the surface and then covered with earth and are________wide
13 X 9 ft
circular tunnels are bored through earth and are_______ wide
16ft 6”
the three types of tunnels
circular, horseshoe, box
no clearance signs will appear every ___ feet of areas of no clearance
50 feet
danger high voltage signs are located approximately every _____feet along the right of way
250 feet
underground stations contain _____standpipe systems and should have appropriate signage
wet
lights are spaced at ____ foot intervals above the safety walkways
40
in the event electrical power is lost, every______fluorescent light is fed by emergency battery power
4th
if electrical power is lost fluorescent lights will be on every _______ feet
160
110 volt 30 amp three prong outlets are located under every_______fluorescent light
other
the at grade right of way is protected by _____ ft chain link fences with barbed wire
6ft
emergency access gates are located every _____ ft along with at grade right of way
800
a yardmaster is on duty ______ hours
24
the aerial or elevated right of way safety walkway is 22 inches and normally ______tread
diamond
each gate is locked with a _____requiring a 2529 or A389 key, both found on the metro key ring
padlock
tilt boxes are also attached to the fence post at various intervals and activate if tilted more than____ degrees
30
discharging passengers from the train in case of an emergency should be attempted as the ______ resort.
last
yard limits normally will be marked by separate chain markers with either the identifier _____or______
YT (yard) LT (lead)
when evacuating passengers off the train car and into the right of way ensure that the third rail power is down and utilize car door number_____ of the bulkhead door provided ladder
9
should vehicles or train cars break through the fence or cause the fence to tilt more than ____degrees from vertical, an alarm will sound at OCC and the computer automatic train control system for that track will stop train movement
30
during an evacuation, it is preferred that passengers be moved to ____ if possible
the nearest station
a _____ is a section of metrorail tracks alongside of or in between railroad main line tracks, railroad yard tracks, or vehicle traffic lanes
common corridor
in areas where metrorail tracks run in a common corridor a _____is used to provide warning if something penetrates the right of way
intrusion detection and warning system
