Speeds and loads hauled could not increase, so traffic density was significantly limited.

Tracks would be naturally created at points of high traffic density.

These sections already carry high traffic density or are likely to grow substantially in future.

Once the lights of the city were behind them the traffic density fell away and he settled to a fast cruise west.

Because of the high traffic density, most railways are electrified.

When traffic density is low, the blocks may have a longer length.

New Zealand, due to its low traffic density, has had many single lane bridges.

Proofs so far have been restricted to the extremes of traffic density.

The critical factor affecting accident costs turns out to be traffic density.

Individual road usage increased resulting in a relatively high traffic density to other nations.