Where was the world's first gas-operated traffic signal installed?

in 1923 a great African-American man Garrett Morgan patented an electric automatic traffic signal.He also invented the gas fast. Morgan's design is still in use today.

lol. Not the subtlest of questions when all the other choices were American

At thr junction near big ne and parliament square.

loco, Should say gas mask

Most good things are invented in Britain. Shame we let the rest of the world overtake us thereafter

not all inventions are perfect, initially.

lots of detailed information. thank you!

See season 2, "Dear Dad...3" of M*A*S*H concerning race.

thebige629, Look at the year

HaugWilde, due to systemic racism and the long term impacts of slavery creating economic and educational disparity in the US, coupled with their being a racial minority, black children also have fewer role models, which makes it important to note those that do exist.

HaugWilde, so many inventions were stolen from black inventors and also we were thought to be inferior so hence the need to be identified as black