Omron K8DT-PZ2CN 德國PTV集團成立于1979年，總部設在德國的卡爾斯魯厄爾市。經過40多年的發展，已經在美國、法國、瑞士、荷蘭、比利時、澳大利亞、新加坡、阿聯酋、中國等地設立了分公司。其軟件和技術在世界上被廣泛應用，全球的用戶達到5500個，分布在127個國家，在中國有超過550位客戶，客戶主要來自交通行業，如設計院、、交警、大學等。近兩年隨著自動駕駛的發展，開始有一些汽車相關客戶。
從2017年開始，保時捷汽車控股公司最終以3億多歐元收購了PTV集團100%的股份。PTV Group被收購了以后，仍然保持獨立運營，全球大概有900名員工，分布在五大洲，大概有28家公司。
VISSIM是 PTV 公司提供的一款的微觀交通流仿真軟件。VISSIM可以方便的構建各種復雜的交通環境，包括大型環島，停車場等，也可以在一個仿真場景中模擬包括機動車，卡車，有軌交通和行人的交互行為。 VISSIM的仿真可以達到很高的精度，包括微觀的個體跟馳行為和變道行為，以及群體的合作和沖突。自1992年進入市場以來，VISSIM 已經成為的交通流仿真軟件之一，其投入的深入研發力量和世界范圍內的大批用戶保證了VISSIM 在同類軟件中處于領先地位。
PTV VISSIM在自動駕駛領域支持聯合仿真，聯合仿真可以是車輛通訊軟件跟VISSIM進行對接，也可以是車輛調度軟件、車輛感知軟件、汽車動力學軟件和VISSIM對接。無人駕駛算法通過接入 VISSIM的方式，使用模擬的高動態交通環境進行仿真測試。
近十年來， VISSIM軟件在全球研究自動駕駛技術的汽車廠商里得到了廣泛的應用，尤其是在日本汽車企業中。近年，隨著中國汽車企業、互聯網企業以及出行科技公司在自動駕駛領域研究的深入， VISSIM在自動駕駛方面的應用也在逐漸擴大。 根據智能交通前沿科技《微觀交通仿真軟件分析比較》文章中的分析， VISSIM具備明顯競爭優勢。因此， VISSIM我國應用廣泛， VISSIM已成為國內的微觀交通仿真軟件，也成為國內仿真平臺必選的仿真核心軟件。
相對于其他自動駕駛仿真系統，PTV的軟件具有如下領先優勢：
01
整合小汽車、公交車、貨車、自行車、電動車、摩托車和行人等交通參與者
在現實生活里的交通世界是復雜多樣的，道路上交通參與者種類眾多，有小汽車、公共汽車、貨車、自行車、電動車、摩托車和行人這些不同的交通工具或交通方式。VISSIM 軟件里可以放在同一個工具里進行整合仿真，每個仿真步長，車和車之間，車和人之間都有相互關系。
VISSIM模擬一個城市交叉口的場景
02
支持路網自建和導入，支持V2X仿真
路網、控制和車輛是 VISSIM 軟件里涉及到的 3 大核心組成部分。 對于路網，VISSIM 支持手動創建路網，支持從 PTV 系列軟件中的宏觀軟件 PTV VISUM 和交通工程軟件 PTV VISTRO 中導入路網，也支持通過 Opendrive 格式導入已有的路網。
尤其是支持 Opendrive 格式的路網的導入，對于車企用戶是非常有用和高效的。例如通過 Prescan、Carmaker 搭建的路網，可以讀入 VISSIM 中，不需要重復創建一遍路網。
VISSIM 特有的路段和路段連接器的路網結構形式，可以非常詳盡地模擬復雜交叉口的車流轉向。 VISSIM 不僅擅長模擬車輛的交通流，也非常擅長模擬路口的控制方式，包括限速標志、讓行標志、停止標志、減速帶、交叉口信號控制方案、可變信息板等。
對于車路協同的仿真，對于模擬V2X，VISSIM有很多應用案例，下圖是德國卡爾斯魯厄理工大學（KIT）進行Pre-Drive C2X項目的車車通訊的仿真結果截圖。
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