

Transport Consultant
01772 749881

Visibility splay drawings are essential tools used by our experienced highways engineers to demonstrate the safety of vehicle access onto highways network. These drawings provide a clear representation of sightlines, ensuring that drivers have adequate visibility when merging onto the road. By utilising visibility splays, we can effectively assess and the safety of your proposed access, giving you peace of mind. Let us help you navigate the complexities of highway safety and obtain your planning permission.
Normal requirements for visibility splay drawings would be to show how far it is possible to see along the highway with an unobstructed view. For example a 30 mph speed limit would require 43 meters unobstructed view within Manual for Streets specification, and a 60 mph speed limit would require a 215 meter visibility splay in accordance with the Design Manual for Roads and Bridges (DMRB for short).
It is possible to reduce this requirement if you know the actual speeds vehicles travel along the road and we can arrange this for you. This will increase the lead time of your drawing to approximately 3 weeks and you will also be provided with a report justifying any decrease in visibility splay.
Adverse weather conditions change vehicle travel speeds, therefore it is sometimes possible that surveys will take longer than anticipated - we will keep you informed if this is the case.
Our experience includes but is not limited to:
- Drive Thru Restaurant
- ​Trailer storage
- Warehouse
- Driveways
- Housing estates
- Agricultural access
- Car Park
Here's How it Works
Here's How it Works




Step#1
Contact iRIS
Use the links to call or email iRIS so we can get some details and get the ball rolling.
Step #2
Accept the Quote
Within 1 working day you will receive a written quote. When you decide to accept, confirm with us that you want to go ahead.
Step #3
Send us Your Plans
Once we've received your work order, just attach a DWG or PDF copy of your proposed access.
Step #4
Receive Your Visibility Splay Drawing
Your expert facilities audit will be researched, written and sent to you to review.
Get Your Visibility Splay Drawing
John Carruthers, VTC
iRIS prepare excellent Travel Plans and carry out Travel Plan monitoring services in a professional and reliable manner. They are committed to promoting sustainable transport and development schemes.
Nigel Robinson, PPS
Great service, very reliable. Alex always does a thorough job and will advise where revisions are required.
Elise Hunt, Maincoat Ltd
Cannot recommend Alex at Iris Sustainable Planning enough for her highly professional service. From initial phone call, to site visit the entire experience was an absolute joy. Alex was thorough, detailed and concise both in her explanations to the final report 10/10