Editing Northern Counties Committee (section)

==== Broad gauge lines ====
Automatic and semi-automatic two-aspect searchlight signals together with magazine train describers: 
* Main and Shore Lines: Belfast to Greenisland and Monkstown Junction.

Tyer's three-position Absolute Block instruments: 
* Main Line: Greenisland – Ballyclare Junction – Kingsbog Junction – Templepatrick – Dunadry – Muckamore – Antrim – Cookstown Junction – Ballymena Goods Yard – Ballymena Passenger Station;
* Larne Line: Greenisland – Carrickfergus Harbour Junction – Carrickfergus Station – Kilroot – Whitehead.

Electric Direction Lever: 
* Main Line: Macfin – Coleraine.

Tyer's electric train tablet instruments: 
* Main Line: Ballymena Passenger Station – Cullybackey – Glarryford – Killagan – Dunloy – Ballymoney – Macfin; and Coleraine – Castlerock – Bellarena – Limavady Junction – Eglinton – Lisahally – Derry~Londonderry;
* Larne Line (short section working): Whitehead – Ballycarry – Magheramorne Loop – Larne – Larne Harbour;
* Ballyclare Branch: Kingsbog Junction – Ballyclare;
* Cookstown Line: Cookstown Junction – Toome – Castledawson – Magherafelt – Moneymore – Cookstown;
* Derry Central Line: Magherafelt – Maghera – Kilrea – Garvagh – Macfin;
* Portrush Branch: Coleraine – Portstewart – Portrush;
* Limavady Branch: Limavady Junction – Limavady.

Railway Signal Company electric key token instruments:
* Larne Line (long section working): Whitehead – Larne.

Train Staff and Ticket with Tyer's two-position Absolute Block instruments: 
* Dungiven Branch: Limavady – Dungiven.

One engine in steam or two or more engines coupled together:
* Draperstown Branch: Draperstown Junction – Draperstown.