Police said members of the public and staff from the nearby Te Awamutu & District Memorial RSA came to the woman's aid.
A police spokesman said the driver was travelling at an estimated 30km/h and clipped the front of the woman's scooter.
The Te Awamutu woman was treated for minor injuries at a nearby medical centre.
Police said it was a timely reminder for motorists to use "common sense" when approaching pedestrian crossings.
"By slowing a little instead of keeping to your normal road speed it will hopefully prevent such a thing happening. Look ahead and double check."