Residents and businesses identify their locations mostly by building number, and occasionally by the name of a prominent structure. Residents know where in the city certain series of building numbers are located; numbers tend to be aggregated in blocks, so someone might say that they live in the 2600s. Around 2003, street names were developed, although there were delays in finalizing them and posting the signs. Street numbers have not been assigned, and building numbers continue to be used. Iqaluit is the only Canadian capital city not to have traffic signals, although some have been installed on a temporary basis.