Cycle lanes and routes are principally indicated by signs and markings. They may be either statutory or advisory on the carriageway, shared use or segregated on footways, or specially designated cycle paths.
Toucan Signals
These are special traffic signals, similar to pelican crossings - they have a red man and green man to show when it is safe to cross - but they also have an extra signal, a green bicycle. This means that cyclists need not dismount, but can cross over at the same time as pedestrians.
Advanced Cycle Stop Lines
At ordinary traffic signalled junctions, there are two sets of stop lines on each approach. The one further from the signals is for general traffic, and the one nearer to the signals is for cyclists. This is to give space for cyclists wishing to turn right to safely change from the nearside to the offside.
Contra-Flow Cycle Lanes
When a one-way street is introduced, it gives little inconvenience to motorists, but can mean that cyclists have to travel much further. A contra-flow cycle lane allows a cyclist to travel safely against the direction of flow of the one-way street and offers a more convenient and direct route.
To create a safe contra flow lane, oncoming traffic must be segregated at each end from the cyclists by a traffic island. This can only be done if the road is wide enough, and it requires a parking ban throughout the length of the contra flow lane. This can be difficult in some residential areas with limited off-street parking.
"Plug" No Entry
This is where a road is two way throughout its length except for a short length of one-way working at one end. This means that entry into the road is banned at one end and traffic is only allowed to exit. To assist cyclists, a short gap allows cyclist to travel past the no-entry signs.
Traffic Signage
A full catalogue of traffic signage and road markings can be found on the 
Highway Code website, which includes those that are applicable to cyclists.
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