Both cars are given the Green Light (GO signal) at the same time. There is no handicap start (when one car gets to leave before the other) involved.
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To extend the analogy of the answer above, it is an advance warning (such as an amber light at a traffic signal) that the go signal is about to occur.
The meaning of "heads up" is to watch out. For example if i threw a baseball at your face, to give you a warning i would say "heads up". or if you are playing catch
It means give you a tip but heads up means put your head down because someone is going to throw something at you.
A beanbag race is a novelty race in which competitors must balance a beanbag on their heads while running.
What is the meaning of the term "arms race
What is the meaning of the term "arms race
Gear Heads - 2014 The Match Race 1-5 was released on: USA: 4 April 2014
The greens which four arms and two heads. Seriously, there is no superior race. But there are dominant genes.
meaning of double hump
The tires of the car
it is a race of the life of ourv filipino
What is the Greek root for birth or race
Head down, bum up: A figurative bodily position adopted when working hard at some task, either physical or mental. (Head down may well be literal, but bum up is figurative.) -from wiktionary