Signals - Special Speeds Flashcards
What are 3 examples of Permanent Speed Restrictions?
- Curve Boards
- Diverging Boards
- Speed Boards
What are 3 examples of Temporary Speed Restrictions?
- Permanent Way Temporary Speed Restrictions (TSR)
- WOLO Temperature restrictions
- CAN notice restrictions
What is the definition of Extreme Caution?
Travelling at a speed not exceeding 25km/h, or the posted track speed if it is lesser. Being able to stop the train in half the distance that can be seen ahead, and always being prepared to find the section ahead occupied or obstructed, or the track damaged
What indicates the direction of the curve on a Curve Board?
The pointed end (Curve Boards are yellow with black numbers)
When can drivers resume normal track speed when seeing a Curve Board?
When the whole train is clear of the curve
When must drivers reduce the speed of the train to the indicated speed when they see a Curve Board?
Before the train enters the curve (Not at the board itself)
What is WOLO 80?
Line Specific
- Heat Restriction Level: When rail temperatures reach 55*C and is rising
- Normal Maximum Line Speed: Line specific where speeds are greater than 80km/h
What is WOLO 70?
Junction Specific
- Heat Restriction Level: Triggered when rail temperatures reach 58*C and is rising
- Normal Maximum Line Speed: Junction specific where speeds are greater than 70km/h
Where are WOLO notices placed?
Notice Boards at Flinders Street
What happens during WOLO events?
Train Control will make Group Calls throughout the day to the affected lines
Where have WOLO Boards been placed?
At various locations around the network at the end of the platforms
What time are WOLO restrictions usually enforced?
Between 12.00pm and 20.00pm
