A core of motorists habitually abuse yellow box junctions at traffic lights and, having consciously or otherwise found themselves 'boxed in', they are also blocking an exit route for those motorists who have the green light in their favour.

So, what does the Highway Code say about yellow box junctions?

The Guide states: 'These have criss-cross yellow lines painted on the road. You must not enter the box until your exit road or lane is clear. However, you may enter the box and wait when you want to turn right, and are only stopped from doing so by oncoming traffic, or by other vehicles waiting to turn right.

'At signalled roundabouts you must not enter the box unless you can cross over it completely without stopping'.

Meanwhile, Police in Enniskillen are warning that they will be enforcing the legislation that governs traffic flows at the town's yellow box junctions. The penalty for breach of the requirements is a £30 fine.

A Police spokeswoman stated: "Motorists are being reminded that the junctions have been put in place to facilitate the free flow of all traffic. Blocking one junction can have a knock-on effect in causing congestion elsewhere.

"It is an offence for motorists to enter the yellow hatched area if their exit route is not clear. They can, though, enter and wait of they intend to turn right and their path is blocked by oncoming vehicles. Said a police spokesman: "Too many motorists are ignoring the regulations. This only causes delays and frustrations for others while they gain little from it themselves.

"In Enniskillen town centre, in particular, if one driver cannot make a turn because some other car is blocking a junction, that can lead to congestion further down the street.

"As with so many aspects of motoring, a little common sense and courtesy goes a long way towards improving the quality of the driving experience for all."