Some people notice vibrations in their homes when buses, lorries or other heavy vehicles pass by. This can cause concern about possible damage to their property.
Brent Council understands these concerns and will investigate reports where there is evidence that the condition of the highway may be contributing to the problem.
What causes traffic vibration?
Traffic vibration occurs in two ways:
- Airborne vibration – Sound from traffic, particularly heavy vehicles, can sometimes create a sensation of vibration.
- Ground-borne vibration – Heavy vehicles transmit vibrations through the road and ground, which may be felt inside nearby buildings and are the most common cause of complaints.
So the following can contribute to vibration:
- heavy vehicles such as buses and lorries
- uneven or damaged road surfaces
- potholes or failed utility trench reinstatements
- the proximity of buildings to the road
- local ground conditions, which can affect how vibration travels.
In many cases, vibration is most noticeable when heavy vehicles pass over defects in the carriageway.
Can traffic vibration damage my property?
Research undertaken by the Transport Research Laboratory (TRL) has found that structural damage to buildings from normal road traffic is very unlikely.
While vibration may occasionally be felt inside a property and may be unsettling, it is not normally sufficient to cause structural damage to buildings that are in a reasonable state of repair.
If you are concerned about the condition of your property, you should consider obtaining independent advice from a qualified structural surveyor or discuss the matter with your building insurer.
What could be the problem with my house?
Cracks in buildings are a common issue, and there are several potential causes for this type of damage. These can include:
- Thermal expansion and contraction: Changes in temperature cause materials like brick and mortar to expand and contract, which can lead to small cracks appearing over time.
- Settling of foundations: Over time, buildings may settle into the ground, which can lead to minor cracks as the structure adjusts.
- Moisture and humidity changes: Fluctuations in moisture levels can cause materials like wood and plaster to expand and contract, leading to cracking.
- Building movement: In some cases, normal movement due to wind or minor shifts in the building’s structure can result in cracks.
- Poor construction materials or techniques: If there were weaknesses in the original construction, this could cause cracks to appear as the building ages.
It’s also worth noting that houses built around the same time or in the same style often exhibit similar cracking patterns due to shared environmental and construction factors, such as thermal expansion and settling.
The Council's responsibilities
As the Highway Authority, Brent Council has a legal duty under Section 41 of the Highways Act 1980 to maintain the public highway so that it is safe for all users. This includes repairing defects in the highway where appropriate.
The Council does not have a statutory duty to investigate or eliminate vibration or noise generated by normal road traffic where the highway is in satisfactory condition.
How we investigate complaints
When we receive a report of traffic-induced vibration, we will assess whether the highway is likely to be contributing to the problem. Depending on the circumstances, this may include inspecting:
- the condition of the road surface
- potholes or carriageway defects
- utility company reinstatements
- traffic calming features such as speed cushions or road humps.
What action might we take?
Road defects
If an inspection identifies defects that are likely to be contributing to excessive vibration, we will arrange repairs in accordance with our highway maintenance policies. Minor defects may be repaired through routine maintenance. Larger defects may be prioritised as part of future planned maintenance programmes.
Utility company reinstatements
If vibration appears to be caused by a defective utility trench reinstatement, we will investigate whether the reinstatement complies with the required standards. Where appropriate, we will require the utility company to carry out remedial work or arrange repairs in accordance with the relevant legislation.
Traffic calming measures
Where complaints relate to existing traffic calming features, we will inspect them to ensure they remain in good condition and have been constructed correctly. Where defects are identified, appropriate maintenance will be undertaken. Existing traffic calming measures that continue to operate as intended will not normally be removed solely because vibration is experienced. When designing new traffic calming schemes, potential vibration impacts will be considered alongside road safety, accessibility and other factors.
When we may not take further action
The Council may decide that no further action is appropriate where:
- the highway is in satisfactory condition
- no highway defect is identified
- the vibration is caused by normal traffic using the road
- there is no evidence that highway maintenance would reduce the issue.
Reporting a problem
If you believe that vibration is being caused by the condition of the road, please report it by emailing highways.management@brent.gov.uk, providing as much information as possible, including:
- the location
- when the vibration occurs
- the types of vehicles involved
- whether there are visible defects in the road surface.
This information will help us investigate your report more effectively.