
10. Vibration of knobby tires prevented the rider from taking his hand
off the bars.
9. MX style safety gear was too bright to see you wave.
8. His front fender prevents you seeing him wave back.
7. Was too busy configuring his GPS/Enduro Roll/FishFinder.
6. His rain/wind/thorn/bug/bird proof thousand-dollar jacket won't
allow it.
5. Was too busy re-arranging his 500 pounds of soft-sided luggage.
4. Doesn't recognize a wave in any language other than German.
3. Too busy splitting lanes/filtering through traffic.
2. One handed wheelies are not easy.
1. On single-track trails you stop, not wave.