Autostrada del Brennero has a dedicated engineering department staffed by 125 engineers who design all new infrastructure developments.
Almost 289 km of the A22 have been surfaced with sound- absorbent drain asphalt (to mitigate aquaplaning and splash and spray effects). The remaining 25 km, consisting of stretches inside the tunnels, on certain structures and in certain sections between Vipiteno and Brennero, feature anti-skid surfacing, which is similar to the drain asphalt and also optimises the performance of the de-icing agents in winter and safeguards the underlying infrastructure.
Along the A22, the safety barriers, referred to as “guard-rails”, are made of COR-TEN steel, which oxidises after ex-posure to weather forming a layer of rust that protects the actual steel from corrosion. All types of guardrails mount-ed along the A22 are certifiedby the L.I.E.R. laboratories in Lyon (France) and AISICO in Rome (Italy) and carry the CE marking.
Widened breakdown lanes
In the section between Egna and Verona (about 123 km), the breakdown lanes have been widened from 2.50 to 3.50 m. Besides improving safety in case of vehicle breakdown they also provide two extra lanes that can be used by traf-ficduring carriageway maintenance work or to ease heavy traffic ongestion (so-called “dynamic” lanes).
Emergency lay-bys
Along the A22 there are 427 lay-bys for use in emergency situations, such as sudden illness of drivers and passen-gers or vehicle breakdown.
Lighting
All motorway junctions and tunnels are well-lit. To enhance visibility inside tunnels, LED lights are used to guide drivers, with the walls painted white or covered with glazed pan-els. In all the tunnels, LED back-lit panels have also been installed with moving fiures guiding towards the emergen-cy escape routes and indicating the distance to the exit.
Fog lighting system
The fog lighting system stretches for about 106 km, from Affi to Modena, and consists of LED lights and sensors. The system activates automatically in foggy conditions, as needed, and light intensity is regulated according to the level of visibility.
Signage and markings
To ensure that all road signs are always perfectly visible, day and night, Autostrada del Brennero exclusively uses signs made with high-performing retrorefective sheeting. For road surface markings, Autostrada del Brennero uses solvent-based paints, hot-spray plastic and elastoplastic laminates, and conducts regular inspections to ensure that the signs and markings are always intact, using its own spe-cial equipment or outsourced laboratory services.
Fencing
The entire motorway is enclosed by metal fencing. The height of the fencing – between 1.20 and 1.90 m – varies de-pending on the structure (fyovers, bridges, viaducts, etc.).
