206.21 Light Rail Operations Flashcards
What does OCS stand for?
Overhead contact system
What does LRV stand for?
Light rail vehicle
What does TPSS stand for ?
Traction powered substation
What does ETS stand for ?
Emergency trip switch
What does OCC stand for ?
Operations control center
What is a pantograph ?
Big mechanical arm that connects the LRV to the overhead wires
The ——— is an electrically powered public transportation system
Light rail system
Light rail vehicles are — feet long, —- feet high and —- feet wide cab at each end.
90, 12, 8.5
What is the maximum number of people that can go in a light rail vehicle?
200
What is the normal max operating speed of the light rail vehicle and how fast does it go during high-speed testing?
35mph, up to 55 mph
What is the stopping distance at 35 mph for the light rail vehicle?
Approximately 190 feet
How many pounds of force can a track switch exert?
1200 lbs
Can you manually operate a track switch when it is deenergized?
Yes
Traction power substations are located approximately how many miles apart?
Every mile
Where is the emergency trip switch located?
Outside the door in a Knox box
How many amps of electricity does an overhead contact system have?
2000-6000 AMPs
The overhead contact system wires are tensioned at —– pounds for the top wire and —— pounds for the bottom wire
5000 ; 3000
The normal height of the light rail overhead contact system wire is —– feet.
18
True or false:
The tracks represent an additional lane of traffic that must be cleared when driving C-3
True
True or false:
Never park apparatus on or between the light rail tracks
True
When light rail vehicle traffic could compromise the safety of firefighters operating on or adjacent to the light rail tracks, Who should the company officers contact to request the operations control center to temporarily stop light rail vehicle traffic in the vicinity of the accident
Fire Dispatch
Responding to an EMS call on the light rail vehicle you should have the operator show you —————-. This engages the break and disables the throttle ensuring the light rail vehicle won’t move.
The key is out
True or false:
As long as the light rail vehicles functioning normally and on the track there’s no need to shut down power.
True
When responding to a light rail vehicle versus another vehicle need to be aware of the possibility of what?
Electrocution of derailed light rail vehicles
Where is the easiest access for extrication and where is it located?
Through the light rail vehicle doors and one is located on each side of the vehicle
True or false:
Windows on the light rail vehicle are easy to break
False. They are extremely hard to break
Metro has a vehicle that can safely lift light rail vehicles, but it has an estimated response time of:
30-60 minutes
Do light rail vehicles have sprinklers for fire protection?
No
Crews must ensure the light rail vehicle and the overhead contact system are ——– prior to attempting to extinguish any significant fires.
Deenergized
OSHA requires any apparatus, ladders, or other equipment to maintain a —– buffer from underground electrical sources such as the overhead contact system
10 foot
