分数是本图鉴内的相对0–100分。用于浏览，不是工程规格。
简短问答
这类交通工具要看哪些本地机构或走廊规则？
先看本地视角中的型式认定、营运许可与枢纽——不要假定一份全球清单。
Is this a buying guide?
No. Tool-Lifes /vehicles is an educational atlas. It explains history, systems and culture without affiliate rankings.
Are the scores official?
No. The six scores are relative editorial 0–100 marks across the 48 types on this site.
Where do the photos come from?
Lead images resolve from Wikimedia Commons via Wikipedia titles on the English masters, with licences recorded on the credits page.
Why metric units?
Metric is the default. Regional notes (US customary, local brand culture) appear in culture and market chapters.
How is this different from a wiki article?
Each type gets seven fixed-depth chapters, comparable scores and cross-type labs — structured for browsing, not a single freeform page.
自行车的推进、结构、控制与安全在同一运行包线内耦合。先分清各系统名称与职责，便于故障模式与合规审查。
下方仪表为设计裕度、可维护性与人因的相对评分，用于同级平台比较。
带编号的系统剪影——机型级示意，非某款车型拆解。
系统
车身·载荷路径
就自行车而言，Butted steel, aluminum, or carbon tubes form a triangle resisting pedal and braking loads. Fork rake sets trail for stable steering.
推进·动力
就自行车而言，Cranks, chainring, cassette, and derailleurs multiply rider cadence into rear-wheel torque. Bottom bracket bearings carry alternating pedal loads.
制动·能量回收
就自行车而言，Cable or hydraulic calipers clamp rotors or rim sidewalls; modulation depends on pad compound and rotor size.
车载网络
就自行车而言，Shifters and 制动 levers place hands for aerodynamics or upright visibility; stem length affects weight distribution.
乘员安全
就自行车而言，EPS foam manages head impacts; dynamo or battery lights meet many night-ride regulations.
热管理
就自行车而言，Rack eyelets and pannier clearance define touring capacity without heel strike.
相对量表
热点
就自行车而言，Chain wear
就自行车而言，Elongated chains accelerate cassette and ring wear and skip under load.
就自行车而言，Spoke tension
就自行车而言，Loose spokes cause wheel hop and rim cracks on potholes.
就自行车而言，Headset bearings
就自行车而言，Notchy steering or 制动 shudder often starts with worn cups and cones.
就自行车而言，Carbon frame damage
就自行车而言，Hidden impact cracks around bottom bracket or dropouts fail suddenly.
就自行车而言，Hydraulic hose routing
就自行车而言，Kinks and seal leaks reduce disc power after hose flex cycles.
材料
就自行车而言，4130 chromoly tubing
就自行车而言，Butted tubes balance compliance and strength in steel frames.
就自行车而言，Toray T700 carbon prepreg
就自行车而言，Unidirectional plies oriented for down tube stiffness and seatstay comfort.
就自行车而言，Stainless spokes
就自行车而言，Corrosion-resistant spokes maintain tension in all-weather commuting.
就自行车而言，Ceramic bearing grease
就自行车而言，Low-drag grease in hubs and bottom bracket extends service intervals.
Keep exploring
More in 公路
汽车
重塑二十世纪城市、工作与休闲的私人机动车。
综合 72 ⚡电动汽车
从油泵到电网——电池电动乘用车的转型。
综合 78 🏍️摩托车
从踏板车到跑车与旅行车的两轮动力交通。
综合 67 🚌公共汽车
连接城市的共享道路车辆——从柴油到电动快速公交。
综合 69 🚛卡车
支撑供应链的道路货运——皮卡到牵引挂车。
综合 57 🚑救护车
为急救争取分钟的道路医疗车辆。
综合 63 🚜拖拉机
田间的动力主力——牵引、动力输出与液压。
综合 53 🚒消防车
把水泵、云梯与救援装备送到火场的专用道路车辆。
综合 56 🏎️一级方程式赛车
把轮胎、空气动力学与混合动力推到极限的开轮赛车。
综合 64 🚜推土机
Tracked construction crawlers with a front blade — grading, pushing and site prep at low speed and high tractive effort.
综合 44 🗑️垃圾车
Municipal refuse collectors — rear loaders, side loaders and automated arms that keep cities clean on fixed routes.
综合 55