🔧 交通运输工具

🚦 交叉口信号周期配时方案Cycle Signal 基于 Webster 法计算最佳周期、分配有效绿灯时间，并绘制信号时序图。Cycle Signal - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. ⚙️ 交通噪声（Leq）预测Noise 基于 FHWA 简化模型，由交通量、车速、重型车比例、距离与地面类型估算等效连续声级 Leq。Noise - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. ⚙️ 交通量（高峰小时系数）计算Traffic Volume (Peak Hour Factor) Calculator 输入24小时交通量或高峰小时4个15分钟流量，计算 PHF、日交通量与 AADT 估计，并生成流量分布图。Compute traffic volume and peak hour factor (PHF). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation... 🚗 停车费用计算器（交通）Parking Fee Calculator - ( Traffic ) 输入停车时长，按首小时单价、之后每小时单价与每日封顶价分段计费，自动算出应缴停车总费用，适用于商场、医院等停车场费用快速估算。Parking Fee Calculator - ( Traffic ) - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. P... 🚗 刹车距离计算器Calculator Calc Speed 刹车距离在线计算器，输入车速、反应时间与路面摩擦系数，估算反应距离与制动距离之和的总停车距离，辅助安全驾驶与交通评估，纯前端。Calculator Calc Speed - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Tran... 🚗 油耗成本计算器Calculator Calc Fuel 输入里程、油耗与油价，分别估算单程与往返（×2）的燃油费用并对比差额，帮助出行与通勤者快速判断来回成本，用于日常用车预算规划。Calculator Calc Fuel - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Trans... 🚗 燃油效率单位转换（MPG ↔ L/100km）Convert Fuel Oil 燃油效率单位在线转换器，支持 MPG（英里每加仑）与 L/100km（升每百公里）互转，以及 UK/US 加仑差异换算，便于跨国用车对比，纯前端。Convert Fuel Oil - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Trans... 🚗 电池续航估算（电动车）Estimate Energy 电动车续航估算器：输入电池容量、能耗与电量状态 SOC，估算可行驶里程，用于电动车出行规划参考。Estimate Energy - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. 🚗 行驶时间估算Estimate Speed Time 输入距离、平均速度与中途休息，计算驾驶时长、休息时长、总耗时及预计到达时间。Estimate Speed Time - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. 🚗 货物体积重量换算（实际重 vs 体积重）Convert Volume Weight 货物体积重量换算器：按体积重与实际重对比，取较大者作为计费重量，用于物流运费核算。Convert Volume Weight - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🚗 车辆折旧计算器（年限法）Calculator Calc Depreciation 输入购车价、使用年限与残值率，选择折旧方法，生成逐年折旧明细与账面净值。Calculator Calc Depreciation - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... ⚙️ 车道容量（饱和流率）估算Estimate Capacity 车道容量估算器：输入车道宽度、饱和流率与高峰小时系数，估算车道通行容量与服务水平 LOS，用于交通设计。Estimate Capacity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. 🚗 轮胎尺寸升级计算器Calculator Calc Tire 轮胎尺寸升级计算器：输入轮胎规格（如 225/45R17），计算外径变化并提示对时速表与实际车速的影响，用于改装参考。Calculator Calc Tire - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Trans... 🚗 违章罚款金额计算（交通）Traffic Violation Fine Calculator 内置常见交通违法行为库，勾选违法行为后累计罚款与扣分，并提示记分风险（参考标准，以当地法规为准）。Estimate traffic violation fines. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools. 🚗 集装箱装箱数量估算（交通）Estimate 4 选择集装箱类型与纸箱尺寸/重量，按体积与重量分别计算最大装箱数，并尝试6种摆放方向取最优。Estimate 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Transportation tools.