PrEN12966”Road Vertical Signs-Variable Message Signs” (Technical Committee CEN/TC226)
Project TROPIC (Traffic Optimization by the Integration of Information and Control)
Vienna Convention
Recommendation K20 table 2, number 2 of CCITT
Operation conditions: according to EN45000
(Essay where it is considered the EN60068)
CENELEC HD 472 S1
Availability of 99.9%: according to ISO/IEC 2382-14:1997
Screen against impact: according to BS873: 1983, Part 5, Impact Category 1 (o equivalent to Europe)