UE资源 City Traffic Pro

City Traffic Pro 是一款功能全面、灵活且性能优化的虚幻引擎5交通AI系统，可模拟车辆在道路、交叉口及高速公路上的真实动态行为（包括变道、停车、避障等）。无论是开发开放世界游戏、影视级过场动画，还是交通模拟项目，本系统都能提供精细的车辆AI控制、流量密度调节及车队管理功能。

版本：UE5.6与5.7版本

核心功能

1. 真实可扩展的交通系统

• 基于样条道路生成车辆，支持变道、让行、鸣笛、交叉口及环岛等行为

• 车辆自动保持限速，并根据前车、红灯及主干道车流调整行驶状态

2. 多车道道路与交叉口

• 内置道路蓝图（信号灯路口、无灯路口、全向停车路口、优先权路口、环岛）

• 可自定义红绿灯样式（欧美模式）及信号时序

3. 车道控制与流量管理

• 通过BP_Change_Lane、BP_Road_Switcher等蓝图实现定向/随机变道、高速匝道汇流

• 支持概率触发、延迟执行、特定车辆控制等参数配置

4. 可驾驶车辆集成

• 包含12款可驾驶车辆（含刹车灯、转向灯、引擎/轮胎/喇叭音效及损伤系统）

• 兼容Fab系列可驾驶车辆模组

5. 停车与静止控制

• 支持路边停车、停车场及动态停车（车辆自主进出）

• 通过BP_Stop_Here实现临时/永久停车指令

• 静态停车场可快速填充轻量化物理网格

6. 动态生成与性能优化

• BP_Vehicle_Manager按玩家位置动态生成/回收车辆，维持流畅交通而不掉帧

• 可设置昼夜流量差异、分道路车辆类型、生成/可视范围

7. 智能避障与容错

• 基于射线检测的动态避障（前车/静态物体）

• 含激进度调节、变道避障、卡死恢复及绕行鸣笛逻辑

8. 昼夜系统无缝集成

• BP_Day_Night_Cycle控制日照旋转、路灯及车灯开关

• 夜间自动降低交通密度

技术优势

✔️ 高性能设计：优化支持数百车辆同时运行
✔️ 全功能调试工具：实时显示样条速度、转向目标、避障检测等数据
✔️ 预制演示城市：包含欧/美/英三种交通布局的示例场景
✔️ 道路创建器兼容：完美适配Road Creator Pro及其他样条/地形道路系统

资源清单

• 12款可驾驶车辆（可独立使用）

• 12款静态车辆模型

• 全套交通控制蓝图（道路生成、交叉口管理、变道逻辑、昼夜系统等）

• 简化版Road Creator基础道路构建工具

City Traffic Pro。City Traffic Pro is a complete, flexible, and performance-optimized traffic AI system for Unreal Engine 5. Simulate realistic vehicle movement on roads, intersections, and highways with dynamic behavior like lane switching, parking, and obstacle avoidance. Whether you’re making open-world games, cinematic sequences, or traffic simulations, City Traffic Pro gives you fine-grained control over car AI, flow density, and vehicle management. Realistic, Scalable Traffic System – Populate any city, town, or highway with vehicles that follow spline-based roads. Supports lane changes, yielding, honking, intersections, and roundabouts. Vehicles maintain road speed while being cautious of vehicles ahead, red lights, and main road traffic.

Multi-Lane Roads & Intersections – Easily build traffic on complex road networks using built-in blueprints for roads, intersections (signalized, mid-block, all-way stop, priority, roundabout). Traffic lights are fully customizable, with support for European and American styles and light sequences.

Lane Switching & Traffic Flow Control – Blueprints like BP_Change_Lane and BP_Road_Switcher let you guide specific, random or all cars between lanes or roads, trigger lane merges, and handle highway entries/exits. Each control supports probability, delays, specific car support and directional rules for flexible setups.

Drivable Cars & Vehicle Integration – Includes 12 fully drivable cars with brake lights, blinkers, engine/tires/horn sound, and damage, plus static versions for parking. System works with many drivable vehicles from Fab.

Parking & Stop Control – Create roadside parking, parking lot, or dynamic parking where cars drive in, stop, and later leave. Use BP_Stop_Here to make vehicles pause temporarily or permanently. Static parking lots can be quickly populated using lightweight physics-enabled meshes.

Dynamic Spawning & Density Management – BP_Vehicle_Manager spawns, teleports, and recycles vehicles around the player, keeping traffic flowing without performance drops. Set spawn density, night-time traffic levels, vehicle types per road, and define spawn/visibility radiuses.

Obstacle Avoidance & Performance – Vehicles detect and avoid other cars and static objects using line traces. Features include configurable aggressiveness, lane-changing obstacle avoidance, and stuck vehicle recovery. Optional “Try to go around” and honking behavior included.

Seamless Day-Night Integration – BP_Day_Night_Cycle rotates the sun, controls streetlights and car lights. Traffic density automatically drops at night.

Designed for Performance – City Traffic Pro is optimized to support hundreds of vehicles simultaneously. Every blueprint and function is profiled and optimized.

Extensive Debug Tools – Visualize spline speeds, vehicle steering targets, avoidance traces, spawn traces, teleport arrows, and vehicle counts.

Demo Cities & Road Creator Integration – Includes a demo level with three pre-built cities showcasing different traffic layouts (European, American, British). Seamlessly integrates with Road Creator Pro and other spline-based or landscape roads. Pack includes everything you need to create traffic system:

12 drivable cars, which can be used separately from traffic system

12 static car meshes

BP_Parking to distribute static car meshes on big parking lot or roadside

BP_Road to create multi-lane road spline for cars to follow

BP_Intersection to create various types of intersections: signalized, all-way stop, priority

BP_Vehicle_Manager to spawn vehicles and keep them around player location

BP_Change_Lane, BP_Do_Not_Change_Lane, BP_Road_Switcher, BP_Stop_Here for traffic flow control

BP_Roadside_Parking to enable vehicles to drive in and out of parking

BP_Day_Night_Cycle to control traffic amount and lights throughout the day

Road Creator Minimal – set of blueprints and assets to build various roads. This is very simplified version of Road Creator Pro (less props, road parts, s