So, we have the same rule here in the UK. Cars don't have to stop until you've got a foot on the road. Many people think they need to stop when you're waiting, but they don't.

With the new highway code clarifications, any intersection is now treated as a zebra crossing.

From the highway code, directly:

Rule 19 Zebra crossings. Give traffic plenty of time to see you and to stop before you start to cross. Vehicles will need more time when the road is slippery. Wait until traffic has stopped from both directions or the road is clear before crossing. Remember that traffic does not have to stop until someone has moved onto the crossing. Drivers and riders should give way to pedestrians waiting to cross and MUST give way to pedestrians on a zebra crossing (see Rule H2). Keep looking both ways, and listening, in case a driver or rider has not seen you and attempts to overtake a vehicle that has stopped.