Related Clues:
- Like rush-hour traffic, ironically
- Moving at low speed
- School zone sign word
- Beatles "___ down, baby, now you're movin' way too fast"
- Small and close to the ground -- like a tortoise?
- Like tortoises
- Leisurely plebeian follows society
- Like a turtle
- Sign word near schools
- Like snail mail, vis-a-vis email
- Glacial in movement
- Like dial-up internet access, almost certainly
- Dull son's depression
- Hardly hopping
- A little dense