New Delhi, Nov. 11 -- Authorities stopped and checked 81,340 vehicles, and at least 18,044 non-CNG and non-electric vehicles not registered in Delhi were turned back from the city's borders during the first 10 days of the ban on entry for vehicles below BS-VI emission standards under the government's winter action plan, according to official data. Starting November 1, the Delhi government implemented its winter action plan to curb air pollution, restricting entry of non-Delhi-registered vehicles that do not meet BS-VI emission standards into the national capital. Joint enforcement teams from the Delhi traffic police, Delhi transport department and MCD were deployed on the borders to stop and verify vehicles, return those that were non-compliant or issue them challans. Data on action taken between November 1 and 10 showed that a total of 767 such vehicles were issued challans. HT carried out a spot check at six borders - Kalindi Kunj, Chilla, Maharajpur, Seemapuri, Apsara, and Ghazipur - in northeast and south Delhi that connect to Uttar Pradesh between 2.30pm and 5 pm. While traffic police personnel were present at three borders, namely the Kalindi Kunj, Chilla at New Ashok Nagar, and Maharajpur near Anand Vihar, MCD enforcement teams were not present at any of the six. Except for the Chilla border, no enforcement teams from the Delhi transport department were present at the other five borders that HT visited. In response, a senior transport department official said, "Enforcement teams deployed at Delhi's border checkpoints were present and functional during their assigned shifts." The official clarified that teams do not install permanent barricades or remain stationed at fixed points, but conduct mobile checks and intercept violating vehicles. A senior traffic police officer, who asked not to be named, said, "I checked with the teams deployed at these border points. They said they were present." According to the winter action plan notification, transport department, MCD and Delhi traffic police have been directed to ensure entry restriction on non-compliant vehicles. However, an MCD spokesperson said, "As far as MCD mandate, this is beyond our purview stopping vehicles from entering a city as part of a joint team cannot pertain to us." Around 2.45 pm, at the Seemapuri DLF border, nobody from the joint teams was found present. According to two toll tax collectors present at a booth, no enforcement teams from traffic, transport or MCD had been visited after the first few days. "You can even see old private vehicles not registered in Delhi and crossing the border without any checks," said one employee. Around 3.30pm, at the Apsara border, police barricades were placed near the roundabout but no enforcement teams were present....