An Amazon order starts with a tap of a finger. Two days later — or even in a matter of hours — the package arrives.

It seems simple enough.

But to deliver Amazon orders and countless others from businesses that sell over the internet, the very fabric of major urban areas around the world is being transformed. And New York City, where more than 1.5 million packages are delivered daily, shows the impact that this push for convenience is having on gridlock, roadway safety and pollution.

Delivery trucks operated by UPS and FedEx double-park on streets and block bus and bike lanes. They racked up more than 471,000 parking violations last year, a 34 percent increase from 2013.

The main entryway for packages into New York City, leading to the George Washington Bridge from New Jersey, has become the most congested interchange in the country. Trucks heading toward the bridge travel at 23 miles per hour, down from 30 m.p.h. five years ago.