Description
The tunnel is 3.24 kilometres (2.01 mi) long. It contains a single carriageway of four lanes, two in each direction. Different height restrictions apply to the nearside and offside lanes in each direction, because of the curvature of the tunnel. These are 3.9 metres (13 ft) and 4.75 metres (15.6 ft) respectively, and there is a 3.5 t weight limit for goods vehicles. All buses are required to use the offside lane, regardless of their height. Lane signals (consisting of an illuminated green arrow or red cross) are displayed at regular intervals, although in normal circumstances none of the lanes are currently used bidirectionally. This is in contrast to the Kingsway Tunnel, where lanes in toll concourse are alternated to prioritise higher traffic in one direction during peak hours.
The tunnel has two branches leading off the main tunnel to the dock areas on both sides of the river. The Birkenhead branch tunnel (known as the Rendel Street branch) was closed in 1965. When travelling in the Birkenhead direction, the branch can still be seen inside the tunnel on the right just before the left hand bend towards the Birkenhead exit. The exit of this branch can also be seen on the outside from Rendell Street, Birkenhead. This branch also carried 2 way traffic, single lane each way. It was also controlled by traffic lights inside the tunnel. This branch mainly served Birkenhead docks and for people travelling to the Wirral resort of New Brighton. These are now best served by the Kingsway tunnel. The Liverpool branch tunnel remains in use, in the exit direction only. It emerges opposite the Liver Building, next to the Atlantic Tower Hotel and Church of Our Lady and Saint Nicholas. Originally, it carried two-way traffic and the junction inside the tunnel was controlled by traffic lights, but this arrangement was discontinued to reduce the delays brought on by increasing traffic levels.
The lighting inside the tunnel was last updated in 1981. Before this the lighting was of amber fluroescent tubes on the walls of the tunnel. The reason given for the change was that the old lighting was ineffective and inefficient. It also caused a flicker effect on vehicle windscreens, which could induce epileptic reactions in susceptible people.
Read more about this topic: Queensway Tunnel
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