To move off on a snowy surface, key factors include using winter or snow tires that provide good traction. Additionally, techniques like gentle acceleration, avoiding spinning wheels, and using tools like sand or grit under tires can help gain grip. Walking safely on snow involves using appropriate footwear with good traction to prevent slipping. Here are some specific essentials:

• For vehicles, winter tires with specialized tread patterns and softer rubber compounds are best for traction on snow and ice.
• Applying gentle, steady throttle and avoiding sudden acceleration or braking helps prevent wheel spin.
• Using sand, gravel, or salt under tires can improve friction on slippery patches.
• For walking, wear shoes or boots with non-slip soles and take small, deliberate steps.

Overall, the combination of proper tires, careful driving techniques, and possibly traction aids (like sand) will help move off effectively on a snowy surface.