Samenvatting
Early 1982 in Amsterdam a group of people was confronted with the task of improving the through-put of tramline 12 by means of simple measures concerning traffic lights. This paper describes: a) the possible changes in traffic control; b) the measures taken for the traffic control of six major intersections. The evaluation of these measures points out that there is a possibility of reducing delays due to waiting for traffic lights by the use of simple methods.