One of the idiosyncrocies of El Adem when it was a RAF base. They had to string a telephone line all they way from Tripoli to the base and where it left the coast road they strung it on the right hand side of the El Adem road.
To save time another team strung it from El Adem as well;---on the right hand side of the road.
That was the reason they crossed the road halfway.