---
type: "Bill"
title: "Concerning electric-assisted bicycles."
description: "Concerning electric-assisted bicycles."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2017-2018"
identifier: "SB 6434"
citation: "Washington SB 6434 (2017-2018)"
classification: ["bill"]
subjects: ["MOTOR VEHICLES", "BICYCLES", "TRAFFIC"]
status: "enacted"
primary_sponsors: ["Rolfes"]
version_count: 3
action_count: 25
vote_count: 2
first_action: "2018-01-17"
last_action: "2018-03-13"
source: "openstates"
source_identifier: "ocd-bill/9d8cc45b-9b0b-4026-a0c3-78f2cf97e22d"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=6434&year=2017"
source_hash: "d2180a9690b26e3c6d342a1383fa57647ce4327756c258bfb64b292b7e9e1ae2"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wa"]
---

# Washington SB 6434 (2017-2018) — Concerning electric-assisted bicycles.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2017-18/Htm/Bills/Senate%20Bills/6434.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2017-18/Htm/Bills/Senate%20Bills/6434-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2017-18/Htm/Bills/Senate%20Bills/6434-S.htm)

## Votes

- 3rd Reading & Final Passage (#10) — **44–2** (pass) · upper
- Final Passage (#34) — **86–12** (pass) · lower

## Sponsors

- Rolfes — primary (person)
- Brown — cosponsor (person)
- Nelson — cosponsor (person)
- Rivers — cosponsor (person)
- Saldaña — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2018-01-17** First reading, referred to Transportation. `reading-1`
- **2018-02-06** TRAN - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2018-02-06** Passed to Rules Committee for second reading.
- **2018-02-08** Placed on second reading by Rules Committee.
- **2018-02-09** 1st substitute bill substituted. `substitution`
- **2018-02-06** TRAN - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2018-02-06** Passed to Rules Committee for second reading.
- **2018-02-08** Placed on second reading by Rules Committee.
- **2018-02-09** 1st substitute bill substituted. `substitution`
- **2018-02-09** Floor amendment(s) adopted.
- **2018-02-09** Rules suspended. Placed on Third Reading.
- **2018-02-09** Third reading, passed; yeas, 44; nays, 2; absent, 0; excused, 3. `reading-3`
- **2018-02-13** First reading, referred to Transportation (Not Officially read and referred until adoption of Introduction report). `reading-1`
- **2018-02-21** TR - Majority; do pass.
- **2018-02-21** Minority; do not pass.
- **2018-02-23** Referred to Rules 2 Review.
- **2018-02-26** Rules Committee relieved of further consideration. Placed on second reading.
- **2018-02-27** Rules suspended. Placed on Third Reading.
- **2018-02-27** Third reading, passed; yeas, 86; nays, 12; absent, 0; excused, 0. `reading-3`
- **2018-03-05** President signed. `passage`
- **2018-03-06** Speaker signed. `passage`
- **2018-03-06** Delivered to Governor.
- **2018-03-13** Governor signed. `executive-signature`
- **2018-03-13** Chapter 60, 2018 Laws. `became-law`
- **2018-03-13** Effective date 6/7/2018. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9d8cc45b-9b0b-4026-a0c3-78f2cf97e22d`. Confidence: reported (aggregated from official Washington legislature records).