Taking responsibility about the track / 
[London Underground] 
 - Issue 4. 
 - [London :  London Underground],  2003. 
 - A safety on the track handbook .
 - A safety on the track handbook .
<br/><br/> "For use by: Track competent person (Traffic hours); Depot track competent person; Site person in charge - Safety on the track; Track trolley operator". 
<br/><br/><label>Subjects--Corporate Names: </label><br/>London Underground Limited.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subways--Maintenance and repair.--England--London<br/>Subways--Safety measures.--England--London