TARBES, France  Tour de France officials and most of the teams in the race are at an impasse over the ban of team radios for two stages, a standoff that could spice up this week’s racing.

Tour officials have called for Tuesday’s and Friday’s stages to be run without the use of radios. Their thinking is that riders will have to make decisions on their own, without as much help from their race directors as they are accustomed to.

If the ban is enforced, directors will have no communication with their riders except by pulling their cars next to the peloton and talking to them. Teams said it would compromise the safety of the riders.

Bjarne Riis, the team manager for the Saxo Bank squad, said racing without radios was “too romantic” a notion. If the Tour does not relent, he said, the teams will use the radios anyway.