In-Vehicle/Engine Start（车内/启动后）
必须演示并说明：漏气/低气压警告/弹出阀/服务刹有效
Must demonstrate & explain brake check: leaks, low air warning, pop-out, service brake works (critical).
低档轻给油测试停车刹/拖车刹能“抱住”车辆。
Tug test to confirm parking and trailer brakes hold.
低速踩刹车，确认制动有效、不跑偏、无异常。
Apply at low speed; effective, no pulling, no issues.
打开灯光/转向/双闪，仪表指示灯对应正常亮。
Dash indicators work with lights/signals/4-ways.
三角牌齐全；灭火器压力正常且固定；（备）保险丝/断路器说明。
Triangles, fire extinguisher (charged & mounted), fuses or explain CB system.
挡风玻璃无遮挡/无严重裂纹；后视镜等观察装置完好可用。 Windshield clear; mirrors/monitoring devices secure and usable.
雨刷完好，喷水可用，能清洁视野。
Wipers good; washers work and clear view.
暖风/除雾能出风工作。 Heater/defroster operate and blow.
电喇叭/气喇叭（如有）能正常鸣响。 City/air horn (if equipped) works.
Lights Operations Check（灯光操作检查）
牵引车+挂车：前灯、示廓灯、转向、刹车、尾灯等都亮；镜片无裂且固定。 All tractor & trailer exterior lights work; lenses secure, not cracked.
Front of Vehicle / Engine Area（车头/发动机区域）
车头灯罩/反光镜片干净、无裂、固定牢靠。 Front lenses clean, secure, not cracked.
机油/冷却液/助力转向液等在正常范围（按车型）。 Fluids at proper level (as equipped).
发动机舱/地面无油、水、燃油、气体泄漏迹象。 No fluid or air leaks seen/heard.
方向机/连杆/软管等固定牢靠，无松动、无裂、无渗漏。 Steering components secure; no looseness, damage, or leaks.
Steering Axle（转向桥/前轮组）
胎压外观正常；无切口鼓包；无露帘线；胎纹足够。 Proper inflation; no cuts/bulges/cords; tread adequate.
无裂无明显变形；无异常/违规焊补。 No cracks/bends; no illegal welds.
齐全无缺失；无松动迹象。 Present, none missing; not loose.
无断裂；支座牢；气囊无破；减震无漏油。 No broken parts; airbags intact; shocks not leaking; secure.
管路无磨损、无裂、无渗漏；固定不拖地。 Lines/hoses not worn, cracked, or leaking; properly secured.
制动部件不应有油/脂污染。 Brakes free of oil/grease contamination.
Side of Vehicle（车身侧面）
侧标志灯/反光片齐全、干净、固定。 Side lenses/reflectors present, clean, secure.
后视镜/广角镜固定、镜面完好、可调。 Mirrors/monitoring devices secure, not cracked, adjustable.
电瓶固定；端子无严重腐蚀；线束无磨破。 Battery secure; terminals ok; cables not frayed.
箱体固定；无泄漏；盖子牢靠。 Tanks secure; no leaks; caps secure.
车架/横梁无裂、无弯、无缺件。 Frame/crossmembers not cracked, bent, or missing parts.
Combination Vehicles only（仅组合车辆）
连接牢靠；不拖地不磨损；无漏气；插头锁紧。 Secure connections; not dragging/chafing; no air leaks; plug locked.
第五轮固定无裂且润滑；或牵引装置牢固无损。 Fifth wheel secure, not cracked, properly greased; or hitch secure.
kingpin/apron无裂弯；第五轮与apron无间隙（no gap）；或其他连接件无损。 Kingpin/apron not bent/cracked; no gap; or other coupling parts sound.
锁爪已锁住；解锁把手在锁定位；安全销/锁到位。 Jaws locked; handle in locked position; safety pin/lock in place.
Trailer Only（仅挂车部分）
支腿收起；摇把固定；无损坏；离地间隙足够。 Landing gear raised; handle secured; not damaged; adequate clearance.
反光带齐全清晰，未大面积脱落。 Reflective tape present and visible.
Rear of Trailer（挂车尾部）
尾灯/刹车灯/转向灯镜片完好固定；反光装置齐全。 Rear lenses secure/not cracked; reflectors present.