The steep gradients of the city centre are worked solely by the standard trams. The regular tram services being worked by upgraded standard trams known as "remodelados". A smaller number of standard trams, painted in distinctive red, white and gold livery, have been refurbished as "tourist trams". Their interiors are refurbished in the style of the early 20th-century and they are fitted with Providence lifeguards. These trams perform guided commentary tours of the historic city centre and one is seen here at the top of the steep Calçada Nova de São Francisco hill.