You may have seen colorful bikes on city streets or college campuses and wondered where they came from.

It's a nationwide launch from dockless bike-share companies aiming to take on Uber with a green & affordable transportation option, but there have been a few hiccups.

As Liz McLaughlin explains sometimes good intentions can lead to unexpected problems.

These brightly colored smart bikes are popping up in cities across the country.

Traitional bike share programs require docking stations.

But you can pick these up anywhere through a smartphone for about a dollar a ride.

As soon as you lock it, the rental ends.

Users are encouraged to park bikes neatly, but some don't.

The bikes can end up blocking walkways going for a swim even used for a prank.

This Texas family woke up to 14 locked limebikes parked on their front lawn.

After a few days the company came to pick them up.

Trying to make sure the occasional pedal power eyesore doesn't diminish a convenient transportation option.

Liz McLaughlin, NBC news.

Helmets aren't included with the bike rental so you'll have to bring your own or go without.

There is no universal helmet law, but 97-percent of bicycle-related deaths involve a rider who is not wearing a helmet.

Many of the bikes have lights, however an added safety feature for riding at night.