NPSBS – Non-Proprietary Safety
Barrier Systems (UK)

TCB Barriers


TCB is approved to EN1317 as N2W6 single and double-sided with a post spacing at 3.2m.

This type of barrier is the most frequently seen on the UK highways. It is a corrugated steel strip 310mm wide and mounted 610mm above ground on ‘Z’ shaped posts.

TCB absorbs impact by deflecting as a whole and assists the vehicle to decelerate, whilst guiding it back towards the carriage-way in a gradual and controlled manner.

This principle is best applied to long straight runs on motorways. It should not normally be installed on a radius of less than 120m.

There is no maximum installation length for TCB, but the approach/departure ends must be anchored at ground level to heavy-duty end posts or to full height anchors (a departure from standard is required).

The tensioner units consist of two M24 bolts installed in special steel brackets fitted into the rear corrugations of the main beam elements. These tensioner units are located at 70m intervals along the length of the barrier.

Helpful Links


If you have any queries please feel free to contact us.
Telephone: +44 (0) 1902 499400

xtratech Technical Support

Visit our Xtratech technical web site for advice and support on the Hill and Smith product range.

Hill & Smith Holdings PLC

Headquartered in the UK, the Group employs some 3,600 staff across 51 sites, principally in 7 countries.

Varley & Gulliver

The UK's premier manufacturer of both steel and aluminium bridge parapets to the civil engineering industry.

Asset VRS

The leading supplier of temporary safety barriers in the UK.

Highways Agency

Managing, maintaining and improving England's motorways and trunk roads.

National Roads Authority

Securing the provision of a safe and efficient network of national roads.

Terms & Conditions

For further information on Hill & Smith terms and conditions please call: +44 (0) 1902 499400