Y
Yearly Calibration Certificate
Official certificate issued after annual equipment calibration. Required by local-authority frameworks for continued operational approval.
Yearly-Competence Assessment
Annual assessment verifying each operator’s training level. Forms part of continuous-improvement programmes.
Yellow Box Hatch Markings
Criss-cross thermoplastic markings at junctions enforcing “keep clear” zones. Must conform to TSRGD diagram 1044 in the UK.
Yellow Box Marking
High‑visibility hatched area to keep junctions clear.
Yellow Centre Line
Regulatory separation line on certain local roads.
Yellow Chevron Stencil
Stencil for yellow chevrons.
Yellow Contrast Backing
Black backing panel under yellow lines.
Yellow Edge Line
Regulatory thermoplastic line indicating waiting/loading restrictions.
Y-Hose Coupler
Connector splitting one water supply line into two branches. Speeds up multi-brush operations requiring additional jet feeds.
Yard-Traffic Management Plan
A yard traffic management plan (YTMP) is a documented system for controlling vehicle and pedestrian movement within depots, fleet yards, and industrial sites. Its primary purpose is to reduce collision risk and improve workplace safety. A typical plan defines routes, walkways, speed limits, signage, and vehicle visibility controls for shared access points and reversing areas.…
