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Fuse protecting the auxiliary-engine start circuit from surge currents. Reduces risk of wiring fires on older sweepers.

Spill kits/cones carried for emergency response.

First absorption of binder into dry surface before chipping; affects final texture.

Module delaying power to sensitive electronics during start-up. Prevents voltage dips affecting controller boot sequences.

Audible buzzer confirming operation of hazard or beacon circuits. Required by many UK local-authority vehicle specifications for safety confirmation.

Shaped inlet improving air entry and reducing turbulence at impeller eye.

Switch panel with back-lit legends for night use. Improves operator visibility and reduces the chance of incorrect switch selection.

Relay controlling indicator flash rate and lamp load detection. Essential for correct operation when switching to LED units.

Adjustable vanes regulating air volume to the fan.

Direct-reading thermometer inserted into binder tank for cross-check.