The Blackwall Tunnel
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) Is 13ft 4in (4m) high, and anyone who hits it is prosecuted.
) There are 11 signs on the Blackwall tunnel southern approach, including TWO electronic beams which activate warning signs. If these are ignored the vehicle wit hit chimes suspended from a gantry just before the tunnel entrance. after which a red traffic light is activated. The vehicle can be seen in The tunnel control room and a message is given to the driver through loudspeakers. The driver is told to reverse out of the tunnel and the height of his vehicle is measured and it is driven up a slip road.
CB aerials and loose sheeting can activate the electronic beams.
O "There is almost a lynchmob when a truck hits the bridge," say Police. Thousands of people are disrupted and delayed.
) If found guilty of offending Road Traffic law outside the tunnel or the Blackwall Tunnel Byelaw you face a fine of up to £2,000 and six licence points. ) Offending foreign drivers are either sent a summons if they have an office in this country or are arrested until they can appear in court.
) In October this year 48 drivers were presented with summonses.