B61L 29/246
Signals or brake- or lighting devices mounted on the road vehicle and
Official title: {Signals or brake- or lighting devices mounted on the road vehicle and controlled from the vehicle or train}
B61L29/246 (Signals or brake- or lighting devices mounted on the road vehicle and) appears on 44 US grants and 40 published applications in this corpus.
Search patents in B61L- Granted patents
- 44
- Published applications
- 40
- Assignees
- 34
- Inventors
- 93
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 3 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 5 |
| 2014 | 2 | 4 |
| 2015 | 2 | 0 |
| 2016 | 3 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 2 | 5 |
| 2024 | 1 | 2 |
| 2025 | 4 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Railroad crossing warning system for enhanced route planning based on spectrogram analysis1 Sep 2026US 12,722,675 B2
- Predictive railroad crossing safety notification and traffic control system and methods19 May 2026US 12,630,204 B2AJ Technologies LLC
- Providing a virtual railroad crossing warning9 Sep 2025US 12,409,875 B2Toyota Jidosha Kabushiki Kaisha
- Train crossing warning system, apparatuses and methods therefor29 Jul 2025US 12,370,947 B1Rapidsos, Inc.
- Railroad crossing warning system for enhanced route planning8 Jul 2025US 12,351,223 B2
- Train crossing warning system, apparatuses and methods therefor2 Jul 2026US 2026/0184258 A1Rapidsos, Inc.
- Systems and methods with enhanced predictive railroad crossing traffic notification and railroad worker safety notification2 Jul 2026US 2026/0184357 A1
- Mobile sensor-based railway crossing safety device22 Jan 2026US 2026/0021837 A1Rowan University
- Control of the movement of a semi-autonomous or autonomous motorised road vehicle approaching a level crossing25 Sep 2025US 2025/0299575 A1Valeo Vision
- Automated Warning System for Uncontrolled Railroad Crossings7 Aug 2025US 2025/0249941 A1
Most cited
By later US patents
- Emergency radio frequency warning device118US 3,949,300 A1976
- Wireless train proximity alert system95US 5,554,982 AHughes Aircraft Company · 1996
- Railroad collision avoidance system and method for preventing train accidents86US 6,759,948 B2Time Domain Corporation · 2004
- Railroad collision avoidance system and method for preventing train accidents69US 6,917,284 B2Time Domain Corporation · 2005
- Method and apparatus for providing enhanced vehicle detection42US 6,519,512 B1Motorola, Inc. · 2003