republic-os/legislation/us/states/co/2019a/sb-19-144.md

---
type: "Bill"
title: "Motorcyclists And Malfunctioning Traffic Signals"
description: "Signals, signs, and markings - inoperable or malfunctioning signals - allowing a driver of a motorcycle to proceed past a malfunctioning traffic control signal. Under current law, when a driver approaches an intersection and faces a traffic control signal that is inoperative or that remains on steady red or steady yellow during several time cycles, the rules controlling entrance to a through street or highway from a stop street or highway apply until a police officer assumes control of traffic or until normal operation is resumed. If a traffic control signal at a place other than an intersection ceases to operate or malfunctions, drivers may proceed through the inoperative or malfunctioning signal only with caution, as if the signal were one of flashing yellow."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2019A"
identifier: "SB 19-144"
citation: "Colorado SB 19-144 (2019A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Dylan Roberts", "Rachel Zenzinger"]
version_count: 9
action_count: 13
vote_count: 6
first_action: "2019-02-19T07:00:00+00:00"
last_action: "2019-04-23T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/69031d22-d363-446d-9a0a-ad10f3671324"
source_url: "http://leg.colorado.gov/bills/sb19-144"
source_hash: "eaca7d488a30dcb507dbf6f0008b4ceae4b6c8b5376cc5475bb2361f6bb7cda3"
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-co"]
---

# Colorado SB 19-144 (2019A) — Motorcyclists And Malfunctioning Traffic Signals

Signals, signs, and markings - inoperable or malfunctioning signals - allowing a driver of a motorcycle to proceed past a malfunctioning traffic control signal. Under current law, when a driver approaches an intersection and faces a traffic control signal that is inoperative or that remains on steady red or steady yellow during several time cycles, the rules controlling entrance to a through street or highway from a stop street or highway apply until a police officer assumes control of traffic or until normal operation is resumed. If a traffic control signal at a place other than an intersection ceases to operate or malfunctions, drivers may proceed through the inoperative or malfunctioning signal only with caution, as if the signal were one of flashing yellow.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2019a_sb144_h_tlg_001.pdf)
2. **Engrossed (03/22/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_eng.pdf)
3. **Final Act (04/16/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_enr.pdf)
4. **Introduced (02/19/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_01.pdf)
5. **PA1 (03/20/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144stra_01.pdf)
6. **Reengrossed (03/25/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_ren.pdf)
7. **Rerevised (04/09/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_rer.pdf)
8. **Revised (04/08/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_144_rev.pdf)
9. **Signed Act (04/23/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2019a_144_signed.pdf)

## Votes

- CONCUR — **35–0** (pass) · upper
- BILL — **34–0** (pass) · upper
- PERM — **62–2** (pass) · upper
- REPASS — **35–0** (pass) · upper
- BILL — **63–1** (pass) · upper
- AMD — **64–0** (pass) · upper

## Sponsors

- Dylan Roberts — primary (person)
- Rachel Zenzinger — primary (person)

## Timeline

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

- **2019-04-23T06:00:00+00:00** Governor Signed `executive-signature`
- **2019-04-16T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2019-04-16T06:00:00+00:00** Signed by the Speaker of the House
- **2019-04-15T06:00:00+00:00** Signed by the President of the Senate
- **2019-04-10T06:00:00+00:00** Senate Considered House Amendments - Result was to Concur - Repass
- **2019-04-09T06:00:00+00:00** House Third Reading Passed with Amendments - Floor `passage, reading-3`
- **2019-04-08T06:00:00+00:00** House Second Reading Passed - No Amendments `reading-2`
- **2019-04-03T06:00:00+00:00** House Committee on Transportation & Local Government Refer Unamended to House Committee of the Whole `referral-committee, committee-passage`
- **2019-03-25T06:00:00+00:00** Introduced In House - Assigned to Transportation & Local Government `introduction`
- **2019-03-25T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2019-03-22T06:00:00+00:00** Senate Second Reading Passed with Amendments - Committee `reading-2`
- **2019-03-19T06:00:00+00:00** Senate Committee on Transportation & Energy Refer Amended - Consent Calendar to Senate Committee of the Whole `committee-passage`
- **2019-02-19T07:00:00+00:00** Introduced In Senate - Assigned to Transportation & Energy `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/69031d22-d363-446d-9a0a-ad10f3671324`. Confidence: reported (aggregated from official Colorado legislature records).