Active level crossing

A level crossing where the crossing users are protected from or warned of the approaching train by devices activated when it is unsafe for the user to traverse the crossing. Protection by the use of physical devices includes: —    half or full barriers, —    gates. Warning by the use of fixed equipment at level crossings: —    visible devices: lights, —    audible devices: bells, horns, klaxons, etc. Active level crossings are classified as: (a)     Manual: a level crossing where user-side protection or warning is manually activated by a railway employee. (b)    Automatic with user-side warning: a level crossing where user-side warning is activated by the approaching train. (c)     Automatic with user-side protection: a level crossing where user-side protection is activated by the approaching train. This shall include a level crossing with both user-side protection and warning. (d)    Rail-side protected: a level crossing where a signal or other train protection system permits a train to proceed once the level crossing is fully user-side protected and is free from incursion.