HK Swept Path 泊車軌跡

1. Plan. A PDF (page 1), PNG, JPG or DXF. Nothing is uploaded.
2. Scale. Click two points on a known dimension and type it in mm (DXF: from the drawing units). Dark, thick strokes become walls and columns; brush, erase or add walls and columns where the tool got it wrong. Small filled pointed shapes such as aisle arrows are ignored and ringed in orange: check each ring; walls drawn only as a hatched outline must be traced with the Wall tool.
3. Mark. Drag the entrance and the exit as arrows in the direction of travel. Drag bay rows along the aisle edge; bays snap to the HKPSG size of the vehicle you pick.
4. Check. The vehicle drives in from the entrance to every bay and back out to the exit, with every other bay taken by a parked vehicle of the same type. Green: in with one distinct manoeuvre (at most one change of gear, no reversal of the steering lock on the final move) and out again, with the full buffer (300 mm; 100 mm beside the bay itself). Amber: needs extra shunts, or only fits with the smaller buffer. Red: cannot get in or out; the clash is painted where the template manoeuvre hits.
5. Export. DXF with layers for bays, wheel paths, body envelope, clearance envelope, clashes, vehicle outlines and traced obstacles; PNG; a one-page A3 PDF.

1. 圖則。PDF（第一頁）、PNG、JPG 或 DXF。檔案不會上載。
2. 比例。在已知尺寸上點兩下並輸入毫米數（DXF 按圖則單位）。深色粗線會成為牆及柱；如有錯漏，可用畫筆、擦膠，或加牆、加柱修正。車道箭咀等帶尖端的細小實心圖形會被略去並以橙圈標示，請逐一核對；只以剖面線輪廓繪畫的牆須用「牆」工具描出。
3. 標示。以箭咀拖出入口及出口的行車方向。沿車道邊拖出一排車位；車位按所選車輛的《香港規劃標準與準則》尺寸排列。
4. 檢查。車輛由入口駛入每個車位，再駛往出口，其餘車位均假設已泊同類車輛。綠：以一次清晰的操控動作駛入（最多轉波一次，最後一步不需反方向扭軚），並可駛出，保持全數緩衝（300 毫米；車位兩旁 100 毫米）。黃：需額外前後移動，或只能以較小緩衝通過。紅：駛不進或駛不出；以標準操控示範碰撞位置。
5. 匯出。DXF 分層包括車位、車輪軌跡、車身掃掠範圍、緩衝範圍、碰撞、車身輪廓及障礙物；另有 PNG 及單頁 A3 PDF。

What the tool checks against, with the editions read for it. The tool is a sketch-stage aid; the documents decide.

工具所依據的文件及版本。本工具只供草圖階段參考，一切以文件為準。

• APP-111BD PNAP APP-111 "Design of Car Parks and Loading/Unloading Facilities", revision Jul 2019. Appendix A (v): a vehicle should park "in one distinct manoeuvre without reversals of the steering lock"; para 3: demonstrate with swept paths where minimum standards are used; Appendix A (iv): show the goods vehicle swept path into and out of the loading bay.屋宇署認可人士作業備考 APP-111《停車場及上落貨設施的設計》，2019 年 7 月修訂。附錄 A (v)：車輛應能「以一次清晰的操控動作停泊，毋須反方向扭軚」；第 3 段：採用最低標準時建議以掃掠軌跡證明；附錄 A (iv)：應於圖則顯示貨車駛入及駛出上落貨位的掃掠軌跡。
• HKPSG Ch 8Planning Department, Table 6 bay sizes (PDF dated Sep 2025): private car 5 × 2.5 m, LGV 7 × 3.5, M/HGV 11 × 3.5, coach 12 × 3.5, light bus 8 × 3.0, container 16 × 3.5.規劃署《香港規劃標準與準則》第八章表 6 車位尺寸（2025 年 9 月 PDF）：私家車 5 × 2.5 米、輕型貨車 7 × 3.5、中／重型貨車 11 × 3.5、旅遊巴 12 × 3.5、小巴 8 × 3.0、貨櫃車 16 × 3.5。
• TPDMTransport Planning and Design Manual, Aug 2026 edition. Vol 2 Ch 2 design vehicles and turning circles; Vol 7 Table 5.4.4.2 goods vehicle dimensions; Vol 7 7.3.2: a stall beside a wall or fence is 0.3 m wider.運輸署《運輸策劃及設計手冊》2026 年 8 月版。第二冊第二章設計車輛及迴轉圓；第七冊表 5.4.4.2 貨車尺寸；第七冊 7.3.2：車位長邊靠牆或圍欄時須加闊 0.3 米。

• Not a submission非入則工具A sketch-stage check, not a substitute for a swept path analysis by your traffic consultant, and not accepted by any authority as such.只供草圖階段自行檢查，不能取代交通顧問的掃掠軌跡分析，亦不獲任何部門接納為正式文件。
• Vehicle model車輛模型Low-speed bicycle (Ackermann) model; the trailer follows a tractrix. Steering can only change gradually while moving (full lock to full lock over about 2 m for a car) and freely when stopped. No tyre slip, no speed effects.低速單車（Ackermann）模型；拖架按曳物線計算。行車時扭軚有速度限制（私家車由左盡至右盡約 2 米），停車時可自由扭軚。不計輪胎側滑及車速影響。
• Assumptions假設Marked "assumption" in the vehicle data: track = width − 0.25 m; coach axle positions; whether the TPDM "turning diameter swept" column is kerb to kerb; the 300 mm buffer; the steering rate. All editable.車輛數據中標示「假設」的數值：輪距 = 車闊 − 0.25 米；旅遊巴車軸位置；運輸署「掃掠迴轉直徑」是否路壆至路壆；300 毫米緩衝；扭軚速度。全部可以修改。
• Accuracy準確度Obstacles sit on a 100 mm grid, so clearances are good to about ±70 mm; image plans also depend on your two scale clicks. Plan view only: no ramps, gradients or headroom.障礙物以 100 毫米網格表示，緩衝距離誤差約 ±70 毫米；圖片圖則亦取決於你點選比例的準確度。只計平面：不計斜道、坡度及淨高。
• Search搜尋Each bay gets a search limit, a fixed number of search steps, so the result is the same on any device. "No path found within the search limit" means the search stopped, not that no path exists; "Cannot get in" or "Cannot get out" means it ran out of places to try at the buffer and gear changes allowed. Amber or red can also mean a cleaner path exists that the search did not reach; those bays say so, and their grade can change when anything near the car park is edited, even outside its walls. On our 66-bay one-way loop test plan, 62 bays came out green and 4 amber, each amber marked as a search that stopped at its limit. The painted clash shows the standard manoeuvre. Measured on a recent laptop: sample A, 42 bays, about 26 s; a 66-bay one-way loop, about 110 s. Red-heavy plans, phones and Safari take longer; you can cancel at any time.每個車位均有搜尋上限（固定的搜尋步數），因此在任何裝置上結果相同。「在搜尋上限內找不到路徑」代表搜尋已停止，並非證明不可行；「駛不進」或「駛不出」代表在容許的緩衝及轉波次數下已無其他可能。黃色或紅色亦可能代表有更簡單的路線而搜尋未能找到，這類車位會註明，而其評級亦可能因停車場附近的任何修改而改變，即使修改位於牆外。在我們 66 個車位的單程環形車道測試圖中，62 個車位評為綠色、4 個為黃色，每個黃色車位均註明搜尋已達上限。紅色碰撞範圍以標準操控示範。於近年的手提電腦實測：示例 A（42 個車位）約 26 秒；66 個車位的單程環形車道約 110 秒。紅色車位多的圖則、手機及 Safari 需時較長；可隨時取消。
• Drawing圖則Walls drawn only as an outline with hatching (typical blockwork) are not detected; left untraced, the vehicle drives through them and bays can show a false green. Small filled shapes with a pointed end (aisle arrows, arrowheads) are ignored; L-shaped, T-shaped and other irregular columns are kept. Every ignored shape is ringed in orange and must be checked: if one is a real column or wall stub (a wedge-shaped one, say), add it back with Column or Wall.只以輪廓加剖面線繪畫的牆（常見於磚牆）不會被偵測；若未描出，車輛會穿牆而過，車位可能被誤評為綠色。帶尖端的細小實心圖形（車道箭咀、箭頭）會被略去；L 形、T 形及其他不規則的柱會保留。每個被略去的圖形均以橙圈標示，必須逐一核對：如屬真實的柱或短牆（例如楔形），請用「柱」或「牆」加回。
• Traffic direction行車方向One-way flow inside the car park is not modelled: only the entrance and exit carry a direction, so a path may drive against a one-way aisle.不計停車場內的單程行車方向：只有入口及出口設有方向，因此路線有可能逆向駛經單程車道。

A free hobby tool, not professional advice, and not affiliated with the Buildings Department, the Planning Department or the Transport Department.免費個人興趣工具，並非專業意見，與屋宇署、規劃署及運輸署無關。

• PDFpdf.js, Mozilla, Apache-2.0, served from this site由本網站提供
• PDF exportjsPDF, MIT, served from this site由本網站提供
• Method方法Hybrid A* search (Dolgov, Thrun, Montemerlo, Diebel 2008); distance transform (Felzenszwalb, Huttenlocher 2012). Written for this tool.Hybrid A* 搜尋（Dolgov 等，2008）；距離變換（Felzenszwalb、Huttenlocher，2012）。程式為本工具編寫。
• Vehicles車輛TPDM Vol 2 and Vol 7 (Aug 2026), Transport Department, HKSAR Government運輸署《運輸策劃及設計手冊》第二及第七冊（2026 年 8 月）