* Give way to vehicles that are on through roads, at 'T-junctions'

Analysis-suitable T-splines are a subset of T-splines which have a restricted T-mesh topology; it is essentially based on the positions of the T-junctions in the T-mesh.

The report points out that the majority of crashes that occur at intersections take place at T-junctions where no traffic control devices are present, or where there is only a give way sign.

If anyone over 65 cannot negotiate a T-junction they should send their licence back to Swansea.

They had to use pipes, T-junctions and bridges and look into how this planning will have an impact on the overall costing of the project.

We knew that it would be the last time we'd get to play in this car because it was being deleted from the range, so we gave it one last blast, revelling in that fantastic 5.0-litre normally-aspirated V8, sending it sideways out of T-junctions and then shedding a bit of a tear when it was finally collected.

Clearly safety has to be paramount on the route and with some of the A55's junctions little more than T-Junctions this work has to be welcomed.

The yellow box: Box junctions are normally used on large, busy junctions such as traffic light-controlled crossroads, T-junctions and even roundabouts.

The project was to be implemented in 2 phases, in first phase of project T-junctions and level crossings are being eliminated for the traffic coming from Islamabad to Saddar.

Stuart Tilley, Northumbrian Water's Project Manager for the Main Event, said: "It is much quicker than conventional methods, a s the ice pig is able to flow in pipes with sharp bends and through T-junctions. It takes just a few hours to clean a two kilometre section of pipe when using ice, whereas it would usually take up to three weeks to clean the same length of pipe using alternative methods."

Both experimental and modeling work has been conducted to investigate phase split between two outlets of T-junctions with different orientations (Hwang et al., 1988; Asano et al., 2001; Margaris, 2006; Tae and Cho, 2006; Shaboury et al., 2007).