While vegetation is often planted when trees and hedgerows are saplings, eventually they will mature and become an immovable object. As such, vegetation in the cross section can create a risk for motorcyclists in the event that they lose control and leave the roadway.

Mature vegetation can also have an impact on sight lines and restrict other road users view of approaching motorcyclists and/or limit road users’ awareness of the approaching road layout.

Treatment

: Road landscapes should aim to fit with the local landscape character, and this will include reflecting the predominant vegetation patterns and species. This is important not only for reducing the impact of the road corridor on the landscape but also in benefiting the road user experience.

However, planting design also needs to consider safety requirements as well as longer term maintenance, management of these areas, the nature of the road corridor that it is intended for, and operational requirements.

Designers can reference the or see for specific guidance.

Designers should ensure that the immediate area adjacent of the traveled way is free from vegetation which could result in serious or fatal injuries to motorcyclists.