David Edward McCusker - Comments

Thank you for accepting my input. note: The led brake or stop light topic should have wording that does not confuse it with tail lamps. The light rise time is what is the improvement over typical 2157 (30Watt) incandescent bulbs in brake stop lamp. I appreciate the extra 0.25 seconds of advance notice and the snappy attention getting sharp turn on time of leds and neon tubes (1996-2001 Ford Explorers). I favor a performance standard rather than a design standard in which rise time for 90% intensity might be a short time, such as 0.05 seconds for either the two side stop lights OR the CHMSL lamp. Or all of them, as long as at least one is fast. My own Ford Freestyle has five small 5w5 (5 watt) bulbs for the CHMSL which I feel is pretty good yet still incandescent. A bad example is my 1994 Chevrolet Corvette with slow bulbs in all five positions, 1157 typical high wattage bulbs, with the five all pulling a large inrush current (7x) along a long thin copper wire, further hurting the rise time. This is on a car with superb braking performance. It would be good to have a drop in 1156 1157 led drop in replacement to give following driver that 1/4 second. I also do not feel as safe in the CHMSL is barely 3' above ground, not high at all. Some small incandescent bulbs in multiples and also neon tubes are fast and effective in easily beating the 0.25 second typical time for a large typical (1157 1156 2157 3157 etc) type larger incandescent bulb. One thing that I observed is that led brake lights in combination with 1156 etc slow bulbs for turn signals are not as effective a signal in my opinion. This seem especially true when the turn lens is red not amber.