*TB 117- Waterfront Red Car Line Flashcards
Watetfront red car:
The streetcars on the Red Car Line are restricted by operational procedures to a ___ mph maximum speed
20
The waterfront streetcars on the Red Car Line are powered by ____ volts of direct current (DC) distributed to the cars by the direct suspension overhead contact system (OCS).
Is the overhead contact system considered high voltage?
600
Yes
The direct suspension system for the waterfront red car line is different from the catenary system used on other electric railway lines in the Los Angles area because?
the contact wire is directly suspended from bracket arms or cross-spans
Waterfront red car line:
What is the height of the contact wire from the top of the rail?
22’6”
Waterfront red car line:
The contact wire is held under 2500-3000 lbs. of tension therefore, it is critical that emergency responders not do what?
Never cut the contact wire.
Will result in an extremely hazardous situation as the tension on the wire is released and recoils uncontrollably.
Waterfront red car line:
It will be standard procedure to turn the traction power off at night, but this policy should never be relied upon as the sole means of determining the presence of traction power. The entire overhead contact system should be considered ____ at all times.
Energized
Waterfront red car line:
Power to the Overhead Contact System can only be turned off where?
Traction Power Substation
Waterfront red car line:
Who should you contact first when needing to shut down power to the overhead contact system?
Manager of streetcar operations
Waterfront red car line:
The Traction Power Substation has an input voltage of ____ and an output voltage of ____
480v AC
600v DC
Waterfront red car line:
The roof of each streetcar is equipped with ___ trolley poles, which are used to transfer electric power from the OCS to the streetcar’s propulsion circuits.
2
Depending on the direction of travel, the trailing pole is raised to the wire
Waterfront red car line: True or False?
Both trolley poles are electrically connected; thus, whenever a trolley pole is on the wire, both poles are energized.
True
Waterfront red car line:
To lower the trolley pole from the wire, simply grasp the trolley rope and pull down. Pull the pole down to a position just below level, and place it under the trolley ____.
Hook
Waterfront red car line:
When applying its emergency braking system, the car will be capable of stopping from 20 mph in ____ feet
120 ft
In wet or oily conditions, the stopping distance can double.
Waterfront red car line:
If the need arises to warn or stop oncoming rail traffic, red flags (daytime only), or red flares can be placed between the rails spaced approximately ____ feet in both directions from the incident.
500
Waterfront red car line:
Each trolley pole is ____ ft long
14’
