Context: Asphalt/bitumen can sometimes be confused with "coal tar", which is a visually similar black, thermoplastic material produced by the destructive distillation of coal. During the early and mid-20th century when town gas was produced, coal tar was a readily available byproduct and extensively used as the binder for road aggregates. The addition of tar to macadam roads led to the word tarmac, which is now used in common parlance to refer to road-making materials. However, since the 1970s, when natural gas succeeded town gas, asphalt/bitumen has completely overtaken the use of coal tar in these applications. Other examples of this confusion include the La Brea Tar Pits and the Canadian oil sands, both of which actually contain natural bitumen rather than tar. Pitch is another term sometimes used at times to refer to asphalt/bitumen, as in Pitch Lake.

Question: To what similar substance can asphalt be confused?
Answer: coal tar

Question: For what was coal tar used in road paving?
Answer: binder

Question: What is the common word is used to describe the combination of tar and macadam?
Answer: tarmac

Question: What use has pushed out the need to produce roads with coal tar?
Answer: natural gas

Question: Instead of tar, what does the La Brea Tars Pits contain?
Answer: bitumen

Question: What is a blood orange color and sometimes confused with "coal tar"?
Answer: Unanswerable

Question: Which similar endothermic material is sometimes confused with asphalt? 
Answer: Unanswerable

Question: Which similar oil can asphalt be confused with?
Answer: Unanswerable

Question: Coal tar has totally overtaken the use of asphalt since which decade?
Answer: Unanswerable

Question: What was used as pitch for road aggregates?
Answer: Unanswerable