F-4.1 Street orientation shall preferably be east-west to allow for maximum south sun to enter the buildings. The street shall be wide enough to ensure that the
buildings on one side do not shade those on the other side.
F-4.2 The following road widths shall be adopted for urban roads in hilly areas:
| Sl No. | Road Type | Width m | ||
| Open Areas (3) | Built-up Areas (4) | Plains (5) | ||
| (1) | (2) | |||
| i) | Arterial road | 18-24 | 15-18 | 50-60 |
| ii) | Sub-arterial road | 15-18 | 12-15 | 30-40 |
| iii) | Collector road | 9-12 | 7.5-9 | 20-30 |
| iv) | Local street | 4.5-6 | 3-6 | 10-20 |
| v) | Loop street (maximum length = 500 m) | 4.5 | 4.5 | 9 |
| vi) | Cul-de-sac (maximum length = 500 m) | 4.5 | 4.5 | 7.5 |
| vii) | Pedestrian path | 1.5-2.5 | 1-1.5 | 1.5-4.5 |
F-4.3 Hill Road Manual (IRC:SP:48-1998), a publication of the Indian Roads Congress shall be referred to for detailed guidelines for planning roads in hilly areas.