ABS and ATC

Question 1

What does ABS stand for?

Answer 1

Automatic block signalling

Question 2

What is the object of ABS

Answer 2

• Where two or more trains head in the same direction, prevents more than one train being in a track section at the same time
• on bi directional lines to prevent trains running in opposite directions in a single line section at the same time

Question 3

How is the object of ABS achieved?

Answer 3

Securing sigs at stop
Track circuitry
Axle counters

Question 4

ABS station limits

Answer 4

Arriving home to the first auto after a departing home
Or
Arriving home to the first auto

Question 5

What does ATC stand for?

Answer 5

Automatic and track control

Question 6

What is the object of ATC?

Answer 6

• Two or more trains heading in the same direction on a single line section it prevents more than one train being in the a section at the same time
• where trains are to proceed in opposing directions in a single line section it prevents more then one train entering the single line section at the same time

Question 7

A single line section is a portion of track between where?

Answer 7

Crossing loops

Question 8

A track section is a portion of track between where?

Answer 8

Two fixed sigs

Question 9

In ATC what sig controls the entrance to crossing loops

Answer 9

Home arrival

Question 10

In ATC what sig controls the entrance to a single line section

Answer 10

Home departure

Question 11

What are the station limits of ATC?

Answer 11

Portion of track between opposing home arrivals