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New technologies can help avoid accidents or even maximize fuel economy. But even the most advanced cars are only as smart as the driver.

In Pictures: How Smart Is Your Car?

Imagine this: Your car has a computer system that not only knows your destination but automatically maintains a steady, gas-conserving pace that's perfectly timed with the moment you reach an intersection 30 miles away, just when the light turns green.

Or, better yet, the car also has a comprehensive collision-avoidance system that detects and averts a crash even before you're aware of the impending danger, ensuring that you make it to that intersection.

This may all sound like fantasy technology, but they're just the types of ideas that participants at the 15th Annual World Congress on Intelligent Transport Systems will discuss when they meet next week (Nov. 16-20) in New York. While collision-mitigation systems and "greenwave" traffic-monitoring technology are still being explored and tested, there are other cutting-edge technologies and conveniences available today that make cars smarter than ever--many of them introduced at conferences such as ITS.

In Depth: Smart Features On Today's Cars

Toyota (nyse: TM - news - people ), for its part, is presenting findings on various systems it is developing, including a brake system that alerts the driver about an upcoming intersection with a stop sign. If the driver ignores the stop sign, the system kicks in and applies brake pressure to avert an accident. At ITS, auto industry figures "learn what new safety technology is on the horizon," says Brian R. Lyons, safety and quality communications manager at Toyota Motor Sales.

Some technology is relatively simple in terms of the convenience or experience it provides but can wind up having a much more positive effect. An example of this is integrated support for portable devices, which allows drivers to connect, say, an iPod to the car's audio system and operate it through the car's controls. Sure, a feature such as this provides a better listening experience, but the real benefit is that drivers spend less time fumbling with the iPod and more time focusing on the road.

ISuppli, a California-based electronic industry analysis firm, forecasts that in 2009 more than half of all passenger cars will offer optional iPod support (it was just barely one-third in 2008). In addition, one-third of all 2009 vehicles (only 16% in 2008) will offer USB interfaces for connections with portable devices like other types of MP3 players and flash drives.

Parents and children may rush through their days in different directions, but the American family is as tight-knit as in the last generation -- or more so -- because of the widespread use of cellphones and the Internet, according to a new poll.

In what was described as the first detailed survey of its kind, released today, researchers reported that family life has not been weakened, as many had worried it would, by new technology. Rather, families have compensated for the stress and hurry of modern life with cellphone calls, emails, text messages and other new forms of communication.

"There had been some fears that the internet had been taking people away from each other," said Barry Wellman, a sociology professor at the University of Toronto and one of the authors of the report, published by the Pew Internet & American Life Project. "We found just the opposite."

In the poll, 60 percent of adults said that the new technologies did not affect the closeness of their family today. Another 25 percent said cell phones and online communication made their families closer, while 11 percent noted that the technology had a negative effect.

Wellman said families appreciated the innovations because "they know what each other is doing during the day." This, he said, comports with his other research, which shows that technology "doesn't cut back on their physical presence with each other. It has not cut down on their face time."

The findings were based on a nationally representative poll of 2,252 people, which explored technology use and profiled in greater detail a group of 482 adults who were married or living together with minor children. These "traditional nuclear families" have been of particular scholarly interest, the report's authors said. They tried to examine trends in single-parent families, too, but the poll numbers were too small to be valid, they said.

Cellphones and internet use were widespread in two-parent houeholds, regardless of education, income, employment, race or ethnicity, with 94 percent saying at least one adult was online and 84 percent saying children were using the Internet.

This marks a large change in short order. Only since the turn of the century has a majority of Americans been users of the Internet and cell phones, researchers said.

When technology has changed family life, those polled said it was for the good.

Forty-seven percent of adults cited said cellphones and the internet had improved the quality of their family communication. Another 47 percent said there was no effect, and 2 percent said there there had been a decrease in quality.

The positive effect reflects family life for Randy and Ana Tillim of Germantown, who have two children. Their sons play online. Both parents rely on Blackberrys not just for work, but for the stuff of daily life. They let each other know about schedule changes, dinner plans, sick children.

"I think it brings us closer because we're able to communicate throughout the day," says Randy, 38. "I don't know what we did without it."