street-design

Name: street-design
Author: Abhinavbwj

118stars35forks

How to install street-design?

abhinavbwj/urban-design-skills-claude/street-design

$npx -y skills add Abhinavbwj/Urban-Design-Skills-Claude --skill street-design

Installs into the current project.

Summary

Design complete streets with proper cross-sections, lane allocation, pedestrian and cycling infrastructure, intersection design, and streetscape elements using NACTO and global standards. Use when the user asks to design a street, create a cross-section, determine road width, des

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SKILL.md

1	# Street Design Skill
2
3	This skill provides comprehensive street design guidance based on NACTO Urban Street Design Guide, Global Designing Cities Initiative (GDCI), AASHTO Green Book, and international best practices. It covers the full workflow from street hierarchy classification through cross-section dimensioning, intersection design, streetscape specification, and traffic calming.
4
5	---
6
7	## 1. Street Hierarchy Classification
8
9	Use the following decision tree to classify any street. Start with the Average Daily Traffic (ADT) count, then apply contextual modifiers.
10
11	### Primary Classification by ADT and Function
12
13	Arterial (>15,000 ADT)
14	- Right-of-Way (ROW): 30-40m
15	- Lanes: 2-3 per direction (3.0-3.3m each)
16	- Design speed: 40-50 km/h (urban), 50-60 km/h (suburban)
17	- Transit: dedicated bus/BRT lanes strongly recommended
18	- Cycling: protected bike lanes required (physically separated)
19	- Pedestrian: wide sidewalks 3.6-6.0m, pedestrian refuge islands at crossings
20	- Median: 3.0-6.0m landscaped or transit median
21	- Signal spacing: 200-400m typical
22	- Role: city-wide movement, connects districts, carries transit trunk routes
23
24	Collector (3,000-15,000 ADT)
25	- ROW: 22-30m
26	- Lanes: 1-2 per direction (3.0-3.3m each)
27	- Design speed: 30-40 km/h
28	- Transit: on-street bus stops with boarding islands
29	- Cycling: protected bike lanes or buffered bike lanes
30	- Pedestrian: generous sidewalks 2.4-3.6m
31	- Median: optional, 1.8-3.0m where present
32	- Role: connects neighborhoods to arterials, local commercial corridors
33
34	Local Street (<3,000 ADT)
35	- ROW: 15-22m
36	- Lanes: 1 per direction (2.7-3.0m each)
37	- Design speed: 30 km/h
38	- Transit: typically no fixed-route transit
39	- Cycling: shared lane markings (sharrows) or separated bike lanes depending on context
40	- Pedestrian: standard sidewalks 1.8-2.4m
41	- Parking: parallel one or both sides
42	- Role: neighborhood access, residential frontage, low-speed environment
43
44	Shared Street / Woonerf (<1,000 ADT)
45	- ROW: 8-15m
46	- Lanes: single surface, no lane markings
47	- Design speed: 10-20 km/h
48	- Cycling: shared surface, cyclists and pedestrians together
49	- Pedestrian: priority over vehicles, no curb separation
50	- Surface: textured paving, bollards, planters as speed controls
51	- Role: residential living streets, market streets, festival routes
52
53	Pedestrian Priority Street (variable ADT, typically <500)
54	- ROW: variable (4-20m)
55	- Vehicles: no through-traffic, emergency and service access only
56	- Design speed: 5-10 km/h (service vehicles only)
57	- Surface: high-quality paving, level, no curbs
58	- Role: retail promenades, civic spaces, historic cores
59
60	### Contextual Modifiers
61
62	Apply these modifiers after primary classification to adjust cross-section priorities:
63
64	\| Context \| Modifier \|
65	\|---------\|----------\|
66	\| Commercial / Retail \| +1.2-2.4m sidewalk width, continuous retail frontage, on-street parking or loading zones, wider furnishing zone for outdoor dining \|
67	\| Residential \| Prioritize tree canopy coverage (>40%), reduce travel lane widths to minimum, add traffic calming, reduce noise through surface treatment \|
68	\| Mixed-Use \| Adaptive curbside management (flex zones for parking/loading/transit by time of day), wider pedestrian zones at ground-floor retail \|
69	\| Industrial / Logistics \| Wider travel lanes (3.3-3.6m) for trucks, larger corner radii, reinforced pavement, limit pedestrian/cyclist exposure to truck movements \|
70	\| School Zone \| 20-30 km/h speed limit, raised crossings at every intersection, flashing beacons, wide clear sidewalks, no on-street parking within 30m of entrance \|
71	\| Hospital / Institutional \| Accessible design priority, generous drop-off zones, clear wayfinding, audible pedestrian signals, level surfaces throughout \|
72	\| Historic District \| Narrower ROW acceptable, special materials and furnishings, heritage lighting, preservation of existing tree canopy and setbacks \|
73	\| Waterfront / Park Edge \| Wider promenade (4.5-6.0m+), separated multi-use path, enhanced landscape buffer, view corridor preservation \|
74
75	---
76
77	## 2. Cross-Section Design Methodology
78
79	Design cross-sections layer by layer, working from the building face toward the street centerline. Each layer has a defined function and dimensional range.
80
81	### Layer Sequence (Building Face to Centerline)
82
83	```
84	BUILDING FACE
85	\|
86	\|--> [A] Building Setback (context-dependent)
87	\|--> [B] Frontage Zone

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Type

street-design

118stars35forks

View on GitHub

How to install street-design?

abhinavbwj/urban-design-skills-claude/street-design

$npx -y skills add Abhinavbwj/Urban-Design-Skills-Claude --skill street-design

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Street Design Skill
2
3	This skill provides comprehensive street design guidance based on NACTO Urban Street Design Guide, Global Designing Cities Initiative (GDCI), AASHTO Green Book, and international best practices. It covers the full workflow from street hierarchy classification through cross-section dimensioning, intersection design, streetscape specification, and traffic calming.
4
5	---
6
7	## 1. Street Hierarchy Classification
8
9	Use the following decision tree to classify any street. Start with the Average Daily Traffic (ADT) count, then apply contextual modifiers.
10
11	### Primary Classification by ADT and Function
12
13	Arterial (>15,000 ADT)
14	- Right-of-Way (ROW): 30-40m
15	- Lanes: 2-3 per direction (3.0-3.3m each)
16	- Design speed: 40-50 km/h (urban), 50-60 km/h (suburban)
17	- Transit: dedicated bus/BRT lanes strongly recommended
18	- Cycling: protected bike lanes required (physically separated)
19	- Pedestrian: wide sidewalks 3.6-6.0m, pedestrian refuge islands at crossings
20	- Median: 3.0-6.0m landscaped or transit median
21	- Signal spacing: 200-400m typical
22	- Role: city-wide movement, connects districts, carries transit trunk routes
23
24	Collector (3,000-15,000 ADT)
25	- ROW: 22-30m
26	- Lanes: 1-2 per direction (3.0-3.3m each)
27	- Design speed: 30-40 km/h
28	- Transit: on-street bus stops with boarding islands
29	- Cycling: protected bike lanes or buffered bike lanes
30	- Pedestrian: generous sidewalks 2.4-3.6m
31	- Median: optional, 1.8-3.0m where present
32	- Role: connects neighborhoods to arterials, local commercial corridors
33
34	Local Street (<3,000 ADT)
35	- ROW: 15-22m
36	- Lanes: 1 per direction (2.7-3.0m each)
37	- Design speed: 30 km/h
38	- Transit: typically no fixed-route transit
39	- Cycling: shared lane markings (sharrows) or separated bike lanes depending on context
40	- Pedestrian: standard sidewalks 1.8-2.4m
41	- Parking: parallel one or both sides
42	- Role: neighborhood access, residential frontage, low-speed environment
43
44	Shared Street / Woonerf (<1,000 ADT)
45	- ROW: 8-15m
46	- Lanes: single surface, no lane markings
47	- Design speed: 10-20 km/h
48	- Cycling: shared surface, cyclists and pedestrians together
49	- Pedestrian: priority over vehicles, no curb separation
50	- Surface: textured paving, bollards, planters as speed controls
51	- Role: residential living streets, market streets, festival routes
52
53	Pedestrian Priority Street (variable ADT, typically <500)
54	- ROW: variable (4-20m)
55	- Vehicles: no through-traffic, emergency and service access only
56	- Design speed: 5-10 km/h (service vehicles only)
57	- Surface: high-quality paving, level, no curbs
58	- Role: retail promenades, civic spaces, historic cores
59
60	### Contextual Modifiers
61
62	Apply these modifiers after primary classification to adjust cross-section priorities:
63
64	\| Context \| Modifier \|
65	\|---------\|----------\|
66	\| Commercial / Retail \| +1.2-2.4m sidewalk width, continuous retail frontage, on-street parking or loading zones, wider furnishing zone for outdoor dining \|
67	\| Residential \| Prioritize tree canopy coverage (>40%), reduce travel lane widths to minimum, add traffic calming, reduce noise through surface treatment \|
68	\| Mixed-Use \| Adaptive curbside management (flex zones for parking/loading/transit by time of day), wider pedestrian zones at ground-floor retail \|
69	\| Industrial / Logistics \| Wider travel lanes (3.3-3.6m) for trucks, larger corner radii, reinforced pavement, limit pedestrian/cyclist exposure to truck movements \|
70	\| School Zone \| 20-30 km/h speed limit, raised crossings at every intersection, flashing beacons, wide clear sidewalks, no on-street parking within 30m of entrance \|
71	\| Hospital / Institutional \| Accessible design priority, generous drop-off zones, clear wayfinding, audible pedestrian signals, level surfaces throughout \|
72	\| Historic District \| Narrower ROW acceptable, special materials and furnishings, heritage lighting, preservation of existing tree canopy and setbacks \|
73	\| Waterfront / Park Edge \| Wider promenade (4.5-6.0m+), separated multi-use path, enhanced landscape buffer, view corridor preservation \|
74
75	---
76
77	## 2. Cross-Section Design Methodology
78
79	Design cross-sections layer by layer, working from the building face toward the street centerline. Each layer has a defined function and dimensional range.
80
81	### Layer Sequence (Building Face to Centerline)
82
83	```
84	BUILDING FACE
85	\|
86	\|--> [A] Building Setback (context-dependent)
87	\|--> [B] Frontage Zone

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6 picks

Type