The rail replacement bus service headed straight into the low bridge on St John's Road on Sunday (October 2) injuring three passengers, despite a warning flash signal from another bus driver.
The incident, which is one of many to occur at this spot, has seen residents urge Hounslow council to improve signs in the area.
Dominic West of St John's Residents Association said people had told him it was a miracle passengers had escaped with only cuts and bruises.
One person commented on Facebook that they believe a passenger sat on the front seat of the top deck saw what was about to happen and dived off his seat onto the floor, escaping with minor injuries.
In the aftermath of the crash, Mr West, added: “A driver on the H37 flashed the driver to warn him but it was too late.
“This bridge keeps being hit.
“I have told Hounslow that the signing needs to be improved.
“They have only just renewed all the signs but only in feet and inches and not also in metric as most boroughs are now doing.
“This is the subject of a European Directive. Many foreign drivers do not understand imperial measurements.”
The driver of the South West Trains rail replacement service has been banned from operating any of its future routes.
Last year, a rubgy replacement bus service lost its roof under the same bridge , while one delivery firm has banned its drivers from using the route after lorries kept getting damaged.
Mr West added St John's Road is also signed as a diversion route when London Road is closed but the low bridge restriction is often not signed.
Hounslow council has said it has no plans to convert the sign to metric measurements and has already added measures in place to warn drivers of the low bridge.
Councillor Amrit Mann, deputy leader of Hounslow Council, said: “Following an assessment by Hounslow Highways, in 2014 new advanced warning signs for drivers were placed either side of St John’s Bridge at the correct height. Reflective paint on the arch of the bridge was also added as an additional measure.
“The signs are checked every month to ensure they are in good condition.
“There are no plans to convert the sign to metric measurements at present. The Department for Transport’s latest guidance advises authorities to convert to metric signage once the sign needs replacing.
“Hounslow Highways will continue to ensure the appropriate signage is in place during any diversions.”