Road Safety: Road Crossing for Pedestrians

I notice whenever I am driving or when I am taking a bus that pedestrians crossing the road has this habit: 

Refer to the diagram below. 

In a lane, whenever someone try to cross the road with oncoming traffic, the person will rush/ run to cross 3/4 of a lane (marked as distance 'A') while at the last quarter of the lane, for some reason, they will slow down and walk (marked distance 'B')  

Please note here that I am not talking about dangerous crossing where the vehicle are so near that they have to brake. I am talking more about those crossings where drivers need not brake when these pedestrians are crossing.

So, when a oncoming car is approaching, a pedestrian crosses distance A and even if he/she stopped within distance B, the car will be able to clear the pedestrian without the need to slow down as the driver can veer the car closer to the lane marking on his/her right. However, with a bus or a truck oncoming, they are not able to clear, hence making it dangerous for both the motorist and the pedestrian.

I was in a bus earlier today and witness such a crossing where a pedestrian slowed down at distance B and the bus nearly had to jam brake.

I would like to put the message across to everyone reading this blog that in such crossing, please make it a point to run or walk quickly THROUGHOUT the crossing and not the first 3/4 of it. Although generally it is safe, make 3/4 crossing a habit and you might endanger yourself one day if the oncoming vehicle is a bus or a truck and worse still it might be speeding.

Walk safe, drive safe, don't inconsiderate other road users, no matter if you are a driver or a pedestrian.