Tractors and machinery for agriculture and forestry. Speed Identification Sign (SIS) best-seller BS EN 1253-1 provides requirements

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Tractors and machinery for agriculture and forestry. Speed Identification Sign (SIS) best-seller BS EN 1253-1 provides requirements1 Scope This document specifies the dimensions, characteristics, and positioning of Speed Identification Signs (SIS). These signs indicate the maximum equipment ground speed, based on the ground speed design capability, for an agricultural vehicle. A rear facing SIS is visible to other operators on public roads approaching the equipment from behind. A forward facing SIS, mounted on the front of towed equipment, alerts operators of the towing vehicle