noun
riding without a helmet
Colloquial abbreviation of ノーヘルメット. Used for motorcycles, bicycles, or similar vehicles. Often implies a violation of safety rules.
See also: ノーヘルメット
ノーヘルでバイクに乗ると捕まるよ。
You'll get caught if you ride a motorcycle without a helmet.
彼はいつもノーヘルで自転車に乗っている。
He always rides his bicycle without a helmet.