Rain, diversions and huge numbers of pilgrims have caused traffic disruption in several areas of the capital, according to reports.NEW DELHI: Delhi is gearing up for yet another weather-dominated day with concerns about traffic, pollution and public safety with heavy rains and continued Kanwar rush posing a tough combination for commuters. Rain, diversions and huge numbers of pilgrims have caused traffic disruption in several areas of the capital, according to reports.Meanwhile, a new study has put the spotlight on the Yamuna, noting that sludge in the river may be behind periodic ammonia spikes that affect the capital’s water treatment system.The city’s pollution-control expenditure is also in focus after the Delhi Assembly was informed that hundreds of crores collected as pollution cess remained unspent. In the policing arena, Delhi Police busted a cybercrime network and arrested nine people, while another high-profile road-safety case involving a speeding BMW has renewed concerns about reckless driving.Kanwar movement, rain put pressure on trafficThe capital is facing major traffic problems as five days of Kanwar related movement coupled with rain have created major traffic problems here. Slow movement is being witnessed on several stretches due to traffic diversions and religious processions intersecting already congested roads. It's especially hard at rush hour.For people in Delhi, the disruption is about more than longer journeys. Rain quickly reveals poor drainage, and diversions push more traffic onto neighboring roads. With preparations for Independence Day in full swing, traffic management is turning out to be a major concern for the city.Yamuna sludge raises water quality concernsA study by the Central Pollution Control Board has suggested that sludge in the Yamuna may be one of the causes of spikes in ammonia in the river. The problem of high ammonia levels has plagued Delhi’s water treatment plants several times, forcing authorities to change operations when the quality of raw water falls.The finding adds a new dimension to the long-standing problem of Yamuna pollution. The sludge that has accumulated is also a cause of the problem, but the main worry remains sewage discharge and industrial pollution, which require a more comprehensive clean-up strategy.Internet-crime crackdownThe Delhi Police has also stepped up its action against organized cybercrime and arrested nine persons in a recent operation. The arrests highlight the growing prevalence of digital scams targeting residents, especially the elderly.Meanwhile, a fatal collision involving a speeding BMW has put reckless driving back in the spotlight. Together the developments tell a story of a Delhi grappling with traffic management, environmental pressures and urban crime at the same time.