Apprehend
When you ride your scooter, you always carry an ink brush and some water. The water is to stay hydrated, obviously, and the brush is to write tickets for the criminals you apprehend. Why apprehend? I guess you're some kind of thirsty, scooter-riding cop who writes tickets in calligraphy. By the way, the shape of this brush (肀) is a little different from usual, but it's still a brush!
Imagine chasing a criminal for ages on your scooter, stopping only for the occasional water break, and finally apprehending them when they hit a dead end. How good would it feel to write a ticket with your fancy brush?
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When you do catch up and apprehend someone, you always tie them down with the tie (たい) from your neck.
It's a really sturdy tie you use to apprehend them, so even if they struggle there's no chance they get away.