White boxes on the base of traffic light poles

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Wednesday 24 June 2015 9.41pm
At the junction of Blackfriars Road and Southwark Street there are white boxes with a red stripe on the base of all of the traffic light poles, does anyone know what they are for please?
Wednesday 24 June 2015 10.02pm
Yes, inside the striped boxes are large lumps of concrete.
Thursday 25 June 2015 7.49am
Is that to stop them being blown away ?
Thursday 25 June 2015 8.06am
10/10 mate!
Thursday 25 June 2015 12.23pm
This is usually a temporary measure whilst road works are going on - the traffic signals with white/red concrete bases are not fixed permanently to the ground as that is not necessarily their final position.
Friday 26 June 2015 12.11am
Thanks JonR, so are they to stop trucks, lorries etc from knocking over the traffic signals and if so why/how would they hit them? Unless they were reversing perhaps.
Friday 26 June 2015 10.09pm
Eileen wrote:
Thanks JonR, so are they to stop trucks, lorries etc from knocking over the traffic signals and if so why/how would they hit them? Unless they were reversing perhaps.

These poles are not set in the ground because they are temporary and will only be up for the duration of the roadworks.

If the top of a pole (where the traffic lights and signage are located) is heavier than a base not anchored into the ground, it will fall over.

To avoid this, the base must be significantly heavier than the top.

This explains why the poles temporarily sit in large concrete containers.

They are painted white and red to make them more visible to the public so as to avoid a potential trip hazard, and are not designed to withstand the impact from a moving vehicle.

When a car strikes a permanent pole embedded into the ground this is what usually happens:

Saturday 27 June 2015 6.02am
About twenty years ago there was a terrible accident in abbey street corner of Enid St. A pole had been knocked into the road, vehicle came along and pole entered it from underneath and impaled the driver!
Saturday 27 June 2015 8.30am
I took this picture at the E&C three years ago: that traffic light fell right where pedestrians wait to cross the street.
Luckily no one was hurt.

Saturday 27 June 2015 9.46am
Crikey Jules, they say say a picture paints a thousand words..or good photograph in this case...

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