Cross Section
There are three (3) important elements within Advisory Lane Roads:
- Edge Buffer (Optional)
- Advisory Lane: 2.5 ft to 6.6 ft
- Central Zone
Do we want to provide US car dimensions, extra buffers??
Limiting width ideas… b-A-b, b-Tr, A-A, bb-Tr
- 18 ft CZ – buses can’t get by, need 20 ft; two streets in Delft that match this; some central zones wide enough for two cars, but not two buses
- 13 ft to 15 ft CZ – enough width for a bike and two cars; need a good example
- 9 ft to 10 ft CZ
- narrower CZs for fietsstraat – Ezelfeldraan
- narrower CZ for contraflow – one-way street with bike contraflow
One-Way Streets with Advisory Contraflow Lane
Treatments at Intersections
- On intersection approaches where vehicle queuing is common:
- Signalized: Convert to full bike lanes to enable bikes to pass queued cars; perhaps also provide a bike box. Maasstraat, Amsterdam @ Churchilllaan
- Unsignalized, where minor queuing is likely: suspend the dashed lines about 12 m (40 ft) from cross street to encourage waiting cars to queue on the right, not the middle, so that they doesn’t block road entrance. (Pijnacker, Schimmelpennink v.d. Oyeweg, eastern end)
- Configured as choker (Pijnacker, Meidoornlaan 155)
- Configured as a chicane (Nootdorp, Startbaan 160)
- Edge rumble strips along road edges to keep both bikes and cars away from edge (Veenakerweg).
- On rural roads, which are typically unlit at night: raised rumble
Chokers (to reinforce road sharing)
Fixed bollards creating chicanes or chokers, which function as “permanent cyclists” to keep motorists from speeding and from informally establishing two lanes, and to keep them in the habit of shifting lateral position and slowing / stopping for another road user if needed. These are typically installed on ALRs that do not have a lot of bicyclists, but a lot of motor vehicles.
Advisory Lanes on Curves in the Netherlands
Advisory Lanes are intended to continue through curves. The below photos show a blind 90-degree curve on Veenakkerweg in Den Hoorn that shows the ALR paint and striping continuing around the curve. To help better slow down vehicles and protect the bicyclists, various elements such as warning signage, mirrors, and boulders have been installed approaching and alongside the curved roadway.
