In the province of Québec, they use stoplights that have shape coding. The lights are mounted horizontally above the roadway. the left and right ends have larger, circular, red lights. The amber light is diamond shaped and immediately to the right of the left-most red light. The green light is smaller than the red light, and circular. Arrow-shaped lights are used for straight-through only and left or right turn lights. Some signals have bi- or tri-colour arrows to add a further dimension to the signalling. I tried to find a good series of photos to show this, but didn’t have much luck unfortunately.
Also, you may want to look at these standards: EN 61310-1:2008 Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007) EN ISO 7731:2008 Ergonomics — Danger signals for public and work areas — Auditory danger signals ISO 11429:1996 Ergonomics – System of auditory and visual danger and information signals Doug Nix [email protected] +1 (519) 729-5704 > On Jun 23, 2023, at 18:13, IBM Ken <[email protected]> wrote: > > Hi Steve! I don't have a copy of that standard but I'm picturing the > red/yellow/green towers on things like manufacturing floor hipot testers. > Have you considered the colorblind user who might not be able to discern > yellow from red, but on a 'stoplight'-like tower, can at least use the > illuminated position to determine the indicator status? > > -Ken A > > On Fri, Jun 23, 2023 at 2:52 PM Steve Brody <[email protected] > <mailto:[email protected]>> wrote: >> Experts, >> >> I have a client who would like to use a single LED capable of multiple >> colors instead of a mutli-lamp light tower that we are used to seeing. >> >> It can produce the required colors in accordance with 60204-1, Table 4. >> >> I have read through 60204-1 (machinery) safety and 61310-1 (requirements for >> visual, acoustic, and tactile signals) and did not find anything that >> prohibits the use of a single LED. >> >> Thoughts? >> >> >> >> Steve Brody >> [email protected] <mailto:[email protected]> >> C - 603 617 9116 >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to >> <[email protected] <mailto:[email protected]>> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> >> For help, send mail to the list administrators: >> Mike Cantwell <[email protected] <mailto:[email protected]>> >> >> For policy questions, send mail to: >> Jim Bacher <[email protected] <mailto:[email protected]>> >> David Heald <[email protected] <mailto:[email protected]>> >> >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >> > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected] <mailto:[email protected]>> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Mike Cantwell <[email protected] <mailto:[email protected]>> > > For policy questions, send mail to: > Jim Bacher <[email protected] <mailto:[email protected]>> > David Heald <[email protected] <mailto:[email protected]>> > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
